A cardiology claim that goes unpaid isn’t necessarily lost but someone has to find out why and then do something about it. That’s the work of cardiology AR follow-up: tracking outstanding claims and patient balances after submission, figuring out why the money hasn’t arrived and pushing each account toward resolution. In a specialty where a single diagnostic or interventional claim can carry a high reimbursement value and an equally complex set of coding, authorization and documentation requirements, AR follow-up isn’t background work. It’s one of the places where a cardiology billing team’s judgment shows up directly in what actually gets collected.

This guide covers how cardiology AR follow-up works in practice: how aging affects a claim’s odds of getting paid, how to prioritize hundreds of open accounts instead of working them in whatever order they appear, where Medicare and commercial payer rules diverge and what separates a useful AR note from one that just says “called insurance.” It’s written for the people who do this work day to day billers, coders, AR specialists, practice administrators, RCM managers and cardiologists who want a clear picture of what happens to the money their practice has already earned.

What Is Cardiology AR Follow-Up?

Cardiology AR follow-up is the structured process of monitoring, researching and resolving unpaid or outstanding cardiology claims and patient balances to determine why payment hasn’t arrived and what should happen next. “AR” stands for accounts receivable the total amount a practice is owed by payers and patients for services already rendered. Every claim that hasn’t been paid in full sits in AR until it’s resolved, whether that resolution is a payment, an adjustment, a write-off, or a determination that the balance isn’t collectible.

AR follow-up sits next to several other revenue cycle functions and it’s worth being precise about where each one starts and stops, because treating them as interchangeable is a common way practices lose track of their own AR:

• Claim submission is the act of sending a clean claim to the payer. It happens once, at the front end.
• Claim adjudication is the payer’s internal process of reviewing the claim and deciding how to pay, deny, or partially pay it. AR teams don’t control adjudication, but they need to read its results accurately.
• AR follow-up begins after submission and continues until the account is resolved checking status, reading remittance data and deciding what action, if any, a claim needs.
• Denial management is the more specialized work of investigating why a claim was denied, correcting the underlying issue and pursuing an appeal when warranted. It’s a subset of AR follow-up specific to denied claims.
• Appeals are the formal, payer-defined process for disputing a denial or underpayment one possible outcome of AR follow-up, not a synonym for it.
• Payment posting is recording what a payer or patient actually paid and reconciling it against the claim. AR follow-up depends on accurate, timely posting; without it, the aging report doesn’t reflect reality.
• Patient collections deal with balances owed by the patient rather than the payer, usually following a different workflow, timeline and communication policy than insurance AR.

A claim “in follow-up” might be pending, denied, underpaid, or simply unacknowledged by the payer and the right next step is different in each case.

Why AR Follow-Up Matters in Cardiology Medical Billing

Cardiology billing covers a wider mix of claim types than many specialties: office visits and E/M coding alongside diagnostic testing (echocardiography, stress testing, Holter and event monitoring), procedural work (cardiac catheterization, coronary angiography, interventional procedures) and device-related services tied to pacemakers and other implantable devices. Each category carries its own documentation expectations, coding rules and, often, its own prior authorization requirements which means more places for a claim to stall and a higher dollar value tied up in any single open claim than in many other specialties. Cardiology medical billing has to account for that complexity from the point of claim submission onward, but AR follow-up is where a stalled claim either gets caught early or quietly ages into a harder problem.

Unpaid claims don’t resolve themselves. Left alone, they age and as they age, filing and appeal deadlines get closer, supporting documentation gets harder to track down and the staff who remember the context of a claim move on to other work. A practice that reviews its AR aging report on a fixed schedule and works claims in a deliberate order recovers more of what it’s owed than one that only looks at AR when cash flow becomes visibly tight.

How Cardiology Accounts Receivable Works

Accounts receivable in a cardiology practice is really two related pools: insurance AR (amounts owed by payers) and patient AR (copays, deductibles, coinsurance and balances remaining after insurance has paid). The two usually need different follow-up approaches. Insurance AR follow-up runs on claim status, EOBs, ERAs and payer correspondence; patient AR follow-up runs on statements, direct communication and, in some cases, payment plans or a collections policy.

A claim enters AR the moment it’s submitted and stays there until fully resolved. Along the way it can move through several states accepted and pending, rejected for a data error, denied, partially paid, or paid in full and its position in that sequence determines what kind of follow-up applies. High-dollar cardiology claims, such as those tied to catheterization or device procedures, deserve particular attention here, since one stalled claim can represent a meaningful share of a week’s expected collections.

Cardiology AR Aging: What Billing Teams Should Monitor

AR aging measures how long a claim or balance has been outstanding, usually grouped into ranges “buckets” measured from the date of service or date of submission. Aging categories aren’t standardized industry-wide; practice management systems and billing companies define their own, though a version of the following structure is common:

Older AR generally deserves closer review, not less. As a claim ages, payer deadlines for correction or appeal get nearer, staff recall of the specific circumstances fades and supporting documentation becomes harder to locate. That doesn’t mean older claims are unrecoverable it means they need a deliberate decision rather than a spot at the bottom of a work queue.

Common Reasons Cardiology Accounts Remain Unpaid

Unpaid cardiology claims tend to fall into a manageable number of categories and knowing which one applies to a given account changes what the right next step looks like:

• Processing delays the payer hasn’t finished adjudicating the claim yet
• Coding issues the CPT, HCPCS, or ICD-10-CM codes submitted don’t align with payer edits, medical necessity policy, or documentation
• Medical necessity denials the payer doesn’t consider the documented diagnosis sufficient to support the billed service
• Prior authorization problems missing, expired, mismatched, or absent authorization for a service that required it
• Eligibility issues inactive coverage, incorrect member information, or an unresolved coordination-of-benefits question
• Rejections the claim never entered adjudication because of a data or format error
• Denials the claim was adjudicated and payment was refused, in whole or in part
• Underpayments the claim was paid, but for less than the applicable contracted or expected amount
• Timely filing problems the claim was submitted after the payer’s filing deadline
• Provider enrollment issues billing or rendering provider information doesn’t match what the payer has on file
• Documentation gaps the medical record doesn’t clearly support the level or type of service billed

The sections below go deeper into each of these, along with how Medicare and commercial payer follow-up diverge and what a practical follow-up workflow looks like from the first review of the aging report to a resolved account.

Cardiology Claim Status Follow-Up

Checking claim status is the most basic form of AR follow-up and it’s worth doing thoroughly before assuming a claim needs a phone call. Depending on the payer, status can typically be checked through a payer portal, an electronic claim-status transaction through a clearinghouse, ERA and EOB records already on file, or when none of those answer the question a call to the payer’s provider line. Not every payer offers the same tools and portal functionality, real-time status availability and phone hold times vary considerably from payer to payer.

Once submitted, a claim generally falls into one of these categories:

• Submitted / pending received by the payer, not yet adjudicated
• Accepted passed the payer’s front-end edits and moved into adjudication
• Rejected never entered adjudication because of a data, eligibility, or format error
• Denied adjudicated, with payment refused for a stated reason
• Partially paid / underpaid adjudicated, with some but not all of the expected amount paid
• Requiring correction needs a corrected claim rather than a fresh resubmission
• Requiring appeal the denial or underpayment needs to be formally disputed
• No response the payer hasn’t returned a determination within the expected timeframe

The distinction between rejected and denied matters more than it might seem. A rejected claim was never processed it needs a corrected resubmission and the original timely filing clock generally still applies. A denied claim was processed and adjudicated and the right next step is usually an appeal or a corrected claim, depending on the reason. Treating a denial like a rejection, or the reverse, is a common source of wasted follow-up effort. Claims submission and tracking built around catching this distinction early keeps claims from aging unnecessarily before anyone notices which category they actually fall into.

How to Prioritize Cardiology AR

Working AR in whatever order it appears on a report usually alphabetical or by claim number is a common but inefficient default. A more deliberate approach weighs several factors together, not any one in isolation:

• Dollar value a several-thousand-dollar catheterization claim generally deserves attention before a low-dollar follow-up visit
• Age claims approaching a filing or appeal deadline need to move up the queue
• Payer some payers are slower or require different follow-up methods, which changes how much lead time an account needs
• Denial reason a correctable data error resolves faster than a denial that requires a full appeal
• Filing and appeal deadlines accounts closest to losing appeal rights need attention regardless of dollar value
• Claim status an account with no payer response yet needs a status check before anything else
• Patient responsibility claims where most of the balance is patient-owed may follow a separate track from payer-owed balances
• Authorization and provider enrollment status either one can block payment on an entire category of claims until resolved
• Recovery probability an account with a documented, correctable issue is a better use of time than one with an unclear history

It helps to separate two categories that often get lumped together: high-dollar AR (worth pursuing because of size, regardless of age) and high-risk aging AR (smaller individually, perhaps, but approaching a point where it becomes unrecoverable). Both deserve dedicated attention, for different reasons one protects revenue concentration, the other protects against claims aging past the point of no return.

The Cardiology AR Follow-Up Workflow

A consistent, repeatable workflow keeps AR follow-up from becoming reactive:

1. Review the AR aging report to see what’s outstanding and how long it’s been open.
2. Identify open, unpaid claims requiring action versus those still within normal processing time.
3. Prioritize accounts using dollar value, age, payer and known issue type.
4. Verify claim submission details dates, codes, modifiers, demographics before assuming the payer is at fault.
5. Check claim status through the payer portal, clearinghouse, or phone.
6. Review the payer’s response, including any denial or pending reason codes.
7. Read the EOB or ERA carefully rather than assuming a code tells the whole story.
8. Identify the actual reason payment hasn’t arrived the step that determines everything after it.
9. Loop in coding or documentation review when the issue looks code- or record-related, rather than guessing.
10. Decide on the right action correction, resubmission, appeal, or continued payer follow-up.
11. Contact the payer directly when portal or electronic data alone can’t resolve the question.
12. Document the follow-up in enough detail that another team member could pick up the account without starting over.
13. Set the next follow-up date so the account doesn’t quietly drop out of the work queue.
14. Escalate unresolved accounts per the practice’s own policy once normal follow-up is exhausted.
15. Post the payment or adjustment accurately once it arrives.
16. Watch for recurring patterns across claims a repeated issue usually points to a fixable upstream problem, not a run of bad luck.

Step 9 is worth underlining on its own. Resubmitting a claim without understanding why it wasn’t paid the first time is a common mistake and it often creates a duplicate claim which can trigger its own denial and stacks a second problem on top of the original one. A resubmission should follow a diagnosis of the underlying issue, not substitute for it.

Denial Management and AR Follow-Up

A denied claim becomes an AR management issue the moment payment remains unresolved, which is essentially immediately. Cardiology denials commonly trace back to a handful of causes: medical necessity determinations, coding or modifier issues, authorization problems, eligibility gaps, timely filing, duplicate claims, non-covered services, provider enrollment mismatches, NCCI bundling edits, or documentation that doesn’t fully support the billed service.

Resolving a denial well usually takes more than one department. AR staff are often the first to notice a pattern, but fixing it typically means coordinating with:

• Coding, when the denial points to a code, modifier, or documentation mismatch
• Billing, when the issue is a submission-level error
• Clinical documentation, when the medical record needs clarification or an addendum
• Credentialing, when the denial relates to provider enrollment or network status
• Authorization and eligibility staff, when the denial traces back to the front end of the visit
• Payment posting, so the AR aging report reflects what’s actually been paid or adjusted
• Appeals, when the denial needs a formal dispute rather than a simple correction

Denial management built around this kind of coordination treats a denial as a signal to investigate, not a dead end to write off.

Underpayments and Partial Payments

An underpayment is different from a denial: the claim was processed and a payment issued, but the amount is less than what the applicable contract or payer policy would suggest is owed. That distinction matters because the correct response differs a denial usually needs correction or appeal, while an underpayment needs a comparison against the applicable reimbursement terms before any action is taken.

A few things worth keeping straight:

• Underpayments should be compared against the practice’s actual contracted rate or the payer’s published fee schedule where one applies not against an assumption of what “should” have been paid.
• The EOB or ERA typically includes adjustment codes explaining why the paid amount differs from the billed amount; those codes are the starting point for determining whether something is actually wrong.
• Not every payment lower than expected is an underpayment. Deductibles, coinsurance, non-covered line items, multiple-procedure reductions and bundling edits can all produce a lower payment that is, in fact, correct.
• When a genuine underpayment is identified, payer follow-up and, if needed, a formal dispute is appropriate, following the payer’s own process for reimbursement discrepancies.

Because contract terms vary by payer and by practice, this guide doesn’t state specific reimbursement amounts or assume a particular contract structure. Payment posting accuracy matters directly here: if payments aren’t posted against the correct contractual terms and adjustment codes, underpayments can go unnoticed indefinitely. Payment posting that reconciles against contracted terms is specifically what catches this before it becomes invisible in the aging report.

AR Follow-Up and Prior Authorization

Authorization problems show up in AR in a few recognizable forms: no authorization on file, an authorization number that doesn’t match the billed service, an authorization for the wrong CPT code or date range, or an authorization that expired before the service was performed. It’s worth being precise about one thing: authorization is not the same as medical necessity. A payer can approve a prior authorization request and still deny the resulting claim on medical necessity grounds if the documentation submitted with the claim doesn’t support it. Obtaining authorization reduces risk it doesn’t guarantee payment.

Because prior authorization requirements vary by payer, plan and specific cardiology service device implants and certain imaging studies are more likely to require authorization than a standard office visit AR staff working an authorization-related denial need to verify the specific requirement that applied to that claim rather than assume a blanket rule. Cardiology Billing Services has a closer look at this process in Cardiology Prior Authorization: Requirements, Process, Denials and Prevention.

AR Follow-Up and Eligibility

Eligibility-related AR problems are often preventable, which makes them worth flagging clearly when they show up in an aging report. Common causes include inactive coverage on the date of service, incorrect member ID or demographic information, an unresolved coordination-of-benefits question when a patient has more than one payer, secondary insurance that wasn’t identified at the time of service, or a benefit limitation missed before the visit. Network status matters too a claim submitted as in-network when the provider is actually out-of-network for that specific plan can produce a denial that looks unrelated to eligibility at first glance.

Front-end eligibility verification checking coverage before the appointment rather than after the claim comes back denied reduces how much of this problem shows up in AR at all. Cardiology Billing Services covers this in more depth in Cardiology Insurance Verification: Eligibility, Benefits, Authorization and Billing Guide.

AR Follow-Up and Coding

Coding-related AR problems can come from CPT or HCPCS code selection, ICD-10-CM diagnosis coding that doesn’t clearly support medical necessity, modifier use, billed units, NCCI procedure-to-procedure edits, global-period conflicts, or payer-specific coding policies that differ from Medicare’s. CMS updates its National Correct Coding Initiative edits quarterly and both CPT and ICD-10-CM are updated annually CPT by the American Medical Association, effective every January 1 and ICD-10-CM by CMS and the CDC’s National Center for Health Statistics, effective every October 1. A code or modifier combination that was correct last year isn’t guaranteed to still be correct today.

When a denial or underpayment looks coding-related, AR staff should route it to a certified coder or the practice’s coding lead rather than resubmit with a guessed correction. This isn’t only a workflow preference changing a code purely to get a claim paid, without a documented clinical basis for the change, is a compliance risk, not a billing shortcut. Medical coding services that handle this kind of review as a distinct step from AR follow-up keep that line intact.

Medicare AR Follow-Up

Medicare AR follow-up runs on rules that are more uniform than commercial payer rules, though “uniform” doesn’t mean simple.

Timely filing. Under 42 CFR § 424.44, Original Medicare claims for services furnished on or after January 1, 2010 must generally be filed no later than one calendar year after the date of service. Claims filed after that window are denied, with only narrow exceptions defined in the regulation itself.

Medicare Administrative Contractors. Medicare claims are processed by regional Medicare Administrative Contractors (MACs), not by CMS directly. MACs handle initial claim processing, first-level appeals and much of the day-to-day claim status and correction process. Operational specifics claim receipt cutoffs, preferred correction methods can differ somewhat by MAC jurisdiction, so a practice working Medicare claims across multiple states should confirm procedural details with the relevant MAC rather than assume they’re identical everywhere.

NCCI edits. CMS’s National Correct Coding Initiative applies procedure-to-procedure edits and medically unlikely edits to Medicare Part B claims, updated quarterly. When two codes billed on the same date fall into an edit pair, one is payable and the other is denied unless a clinically appropriate modifier commonly modifier 59 or one of the more specific XE, XP, XS, or XU modifiers is documented and applied.

Medicare appeals. Medicare uses a standardized five-level appeals process with specific, largely non-negotiable deadlines:

1. Redetermination by the MAC request within 120 days of the initial determination, using Form CMS-20027.
2. Reconsideration by a Qualified Independent Contractor (QIC) request within 180 days of the redetermination decision, using Form CMS-20023.
3. Administrative Law Judge (ALJ) hearing request within 60 days of the QIC’s decision; for calendar year 2026, the claim must meet a minimum amount in controversy of $200.
4. Appeals Council review within HHS’s Departmental Appeals Board.
5. Judicial review in federal district court for calendar year 2026, this requires a minimum amount in controversy of $1,960.

Evidence not submitted by the reconsideration stage can be excluded from later appeal levels, so redetermination and reconsideration are usually the right point to submit the strongest available documentation not something to hold back for a hearing.

Commercial Payer AR Follow-Up

Commercial payer follow-up starts from a different baseline than Medicare. There’s no single regulation setting a uniform timely filing window, appeal process, or documentation standard across all commercial payers each sets its own rules through its provider manual and the practice’s specific contract and those rules differ in ways that matter directly to AR follow-up:

• Claim status tools some payers offer detailed real-time portals; others lean more heavily on phone support or clearinghouse status transactions
• Prior authorization and referral requirements these vary by plan type, not just by payer
• Medical policies commercial payers often publish their own medical necessity criteria, which can be stricter or more specific than Medicare’s
• Network participation in-network and out-of-network claims for the same service can follow entirely different payment and appeal paths
• Timely filing and appeal deadlines these range widely across commercial payers and should be confirmed in the provider manual or contract rather than assumed
• Corrected claim processes how a payer wants a corrected claim submitted and whether it resets any deadline, is payer-specific

Because these terms are set at the payer and contract level, this guide doesn’t state specific commercial payer deadlines or policies. AR staff should verify current rules directly against the payer’s provider manual, portal, or the practice’s own contract before treating any commercial payer rule as fixed.

Medicare vs. Commercial Payer AR Follow-Up at a Glance

Commercial payer specifics in this table should be confirmed against the individual payer’s current documentation before being applied to a real account.

Common Cardiology AR Problems

Claim Appeals During AR Follow-Up

Not every denial needs an appeal some need a straightforward correction and resubmission instead so the first decision is figuring out which one applies. A workable process generally follows this sequence:

1. Review the denial reason carefully, using the exact code or explanation the payer provided.
2. Determine whether the issue is correctable (a data error, a missing modifier) or genuinely disputed (a medical necessity determination the practice disagrees with).
3. Review the payer’s specific policy covering the denied service.
4. Compare the claim against the medical record to confirm what was actually documented.
5. Verify the coding independently rather than assuming the original submission was correct.
6. Gather the documentation the appeal will need clinical notes, test results, prior authorization records and relevant payer policy language.
7. Write a specific, evidence-based appeal argument rather than a general request for reconsideration.
8. Submit the appeal exactly as the payer instructs method, form and required attachments all matter.
9. Track the appeal deadline closely; appeal windows are often shorter than original filing deadlines and vary by payer and denial type.
10. Follow up on the appeal’s status rather than waiting passively for a determination.
11. Post the resulting payment or adjustment accurately once the appeal is resolved.

Appeal deadlines and required documentation differ by payer and by denial type, so a workflow built around a single assumed deadline eventually misses one. For Medicare claims, the deadlines outlined in the Medicare AR Follow-Up section above apply; for commercial payers, the practice’s provider manual or contract is the source of truth.

AR Follow-Up and Timely Filing

Timely filing is the deadline by which a claim must reach the payer to be considered for payment at all. Miss it and in most cases no appeal can recover the claim. A few distinctions matter:

• Original claim deadlines and corrected claim deadlines aren’t always the same. Some payers require a corrected claim within the original filing window; others allow a separate correction period.
• Appeal deadlines are typically calculated separately from the original filing deadline, usually running from the date of the denial notice rather than the date of service.
• Proof of timely submission clearinghouse acceptance reports, payer acknowledgments, submission logs matters when a timely filing denial is disputed, since the burden generally falls on the provider to show the claim was filed on time.
• Aging claims need proactive monitoring precisely because timely filing and appeal windows close on a schedule that doesn’t pause for a busy week.

Medicare’s timely filing rule one calendar year from date of service is set in federal regulation and doesn’t vary by MAC. Commercial payer timely filing windows are set by contract and vary considerably, so this guide won’t state a specific number for any given payer. Confirm the applicable deadline in the payer’s provider manual before treating a claim as either time-barred or safe.

AR Follow-Up Documentation and Notes

Every AR follow-up action should be documented specifically enough that a colleague who has never touched the account could read the note and understand exactly where things stand. A useful entry typically captures:

• Date of the follow-up
• Payer contacted and, where appropriate, a representative reference
• Claim number and account reference, consistent with the practice’s privacy and PHI-handling policies
• Current claim status
• The denial or pending reason, in the payer’s own terms where possible
• What the payer actually said, not just a summary of the call
• The action taken as a result
• Any documents the payer requested
• Whether a correction or appeal is needed and by when
• The next follow-up date

The difference between a useful note and a useless one usually comes down to specificity. “Called insurance” tells the next person nothing. A note that records who was contacted, what was confirmed, what remains open and when to follow up again tells them exactly what to do if they pick up the account tomorrow. Vague notes force whoever works the account next to redo the research from scratch which erases the exact time AR follow-up exists to save. Notes should also avoid storing more protected health information than the follow-up actually requires: enough to work the account, not a full clinical summary.

Denial Root-Cause Analysis

Individual denials are worth resolving one at a time, but recurring denials are worth investigating as a pattern. Tracking denials by payer, CPT code, ICD-10-CM code, rendering provider, location, procedure type, date of service, dollar amount, denial reason, authorization status and appeal outcome makes patterns visible that no single claim would reveal on its own.

A recurring pattern usually points back to one of a small number of upstream causes:

• Eligibility the same verification gap showing up across multiple patients or a specific plan type
• Authorization a particular service consistently missing or mismatched authorization
• Coding a specific code or modifier combination triggering the same edit repeatedly
• Documentation a note template or style that isn’t capturing what a particular payer requires
• Claim submission a data field or format issue affecting a batch of claims rather than one
• Credentialing a provider whose enrollment status doesn’t match what a payer has on file
• Payer contracting a payer applying a policy the current contract doesn’t anticipate
• Payment posting adjustment codes posted incorrectly, which can make a real underpayment look like a routine contractual adjustment

Root-cause analysis is what turns AR follow-up from a claim-by-claim task into something that actually reduces future denials, rather than clearing today’s queue and waiting for tomorrow’s to look the same.

Cardiology AR Metrics to Track

A handful of metrics give a cardiology practice a reasonably complete picture of AR performance, provided the underlying definitions are applied consistently.

Days in AR measures the average time between billing a charge and collecting payment for it:

Days in AR = Total Accounts Receivable ÷ Average Daily Charges

where Average Daily Charges is typically total charges for a period divided by the number of days in that period. Because the result depends heavily on which period is used and whether patient AR is included, define the calculation the same way every time it’s reported so month-to-month comparisons actually mean something.

Denial rate measures the share of adjudicated claims that come back denied:

Denial rate = Denied claims ÷ Applicable adjudicated claims × 100

The denominator matters whether it includes only initial submissions or resubmissions too changes the result, so it should be defined clearly whenever the rate is reported.

Other useful metrics:

Organizations define these metrics differently different date ranges, different treatment of patient balances, different definitions of “resolved” so a benchmark figure pulled from one source doesn’t automatically transfer to another practice’s numbers. What matters more than matching an external number is defining each metric clearly, applying that definition consistently and tracking the trend over time.

Common Cardiology AR Management Mistakes

Some of the most expensive AR problems aren’t complex; they’re procedural. Cardiology billing errors upstream of AR follow-up often show up later as exactly the mistakes below:

Practical Cardiology AR Scenarios

The scenarios below are hypothetical illustrations of how AR follow-up plays out. They are not descriptions of actual patients or claims.

Scenario 1: A pending echocardiography claim. A transthoracic echocardiography claim shows no payer response 35 days after submission. Rather than assume the worst, the AR specialist checks claim status through the payer portal and confirms the claim was received and accepted into adjudication, with no rejection or denial on file it’s simply within the payer’s normal processing window. The right move is to note the confirmed status, set a follow-up date roughly a week past the payer’s typical turnaround and avoid submitting a duplicate claim, which would only complicate the account. Checking status before escalating, rather than assuming silence means a problem, prevents unnecessary duplicate submissions on otherwise straightforward pending claims. Cardiac imaging billing services covers this kind of diagnostic-claim follow-up specifically.

Scenario 2: A cardiology office visit denial. An established-patient office visit is denied with a medical necessity reason code. The AR specialist reviews the claim against the documentation and finds the diagnosis codes submitted don’t clearly connect to the reason for the visit as described in the note. Rather than resubmitting with the same information, the claim goes to coding for review; coding finds that a more specific diagnosis code, already supported by the documentation, wasn’t selected the first time. A corrected claim goes out with the more specific code. Preventing a repeat means flagging the coding pattern for review across similar visits, not just fixing the one claim see Cardiology Documentation Requirements: A Complete Billing and Coding Guide for what documentation typically needs to support.

Scenario 3: A cardiac monitoring underpayment. A Holter monitoring claim is paid, but at a lower amount than the AR specialist expects based on the practice’s fee schedule. Before assuming an underpayment, the specialist reviews the ERA’s adjustment codes and finds a multiple-procedure reduction applied because another service was billed for the same patient on the same date the lower payment is consistent with the applicable payer policy, not an error. In a different version of the same scenario, the adjustment codes might instead point to a processing error inconsistent with the contract, in which case the next step is documenting the discrepancy and opening payer follow-up on the specific underpaid line.

Scenario 4: An authorization-related outstanding claim. A claim for a cardiac procedure is denied for lack of authorization, but the practice’s records show an authorization was obtained beforehand. The AR specialist verifies the authorization number, approved CPT code and approved date range and finds the authorization was issued for a different, related CPT code than the one ultimately billed a common mismatch when the procedure performed differs slightly from what was originally scheduled. Because the authorization doesn’t match the billed code, correction isn’t the right tool; the claim needs a formal appeal with documentation explaining the clinical reason for the code difference, or a peer-to-peer review request if the payer offers one. Preventing this pattern going forward means confirming that authorization and billed codes match before claims for scheduled procedures go out.

Scenario 5: An aging high-dollar cardiology claim. An interventional cardiology claim reaches 100 days outstanding with an unclear history several notes reference calls to the payer, but none specify what was actually said or resolved. Given the claim’s value and the approaching risk of losing appeal rights, the account is escalated for focused review rather than left in the general queue. Reconstructing the claim’s status becomes the first task, followed by a direct payer contact to get a definitive determination in writing. Once current status is confirmed, the practice can decide whether a corrected claim, an appeal, or continued follow-up is the right path a decision that would have been available much earlier if the account’s notes had been specific from the start.

How to Prevent Aging AR Before It Starts

AR follow-up recovers money that’s already stalled; prevention keeps it from stalling in the first place. A few checkpoints, applied consistently, reduce how much AR ever needs heavy follow-up:

Before the visit verifying eligibility and benefits, confirming referral and prior authorization requirements, checking network status and confirming demographic and insurance information all reduce denials tied to the front end of the visit.

During the encounter documentation that clearly supports the diagnosis, the procedure performed and medical necessity gives coding and billing what they need without a later trip back to the provider.

During coding applying current CPT, HCPCS and ICD-10-CM codes, appropriate modifiers, correct units and NCCI edit awareness catches problems before the claim ever reaches the payer.

Before submission a final review of demographics, payer and subscriber information, authorization, codes, modifiers and claim edits catches the errors that would otherwise come back as rejections.

After submission actively monitoring for acceptance, rejection, denial and payment, rather than waiting for a report to surface problems, is what keeps AR follow-up proactive instead of reactive.

None of this eliminates AR follow-up entirely even a clean claim can be delayed, underpaid, or denied for reasons outside a practice’s control. But a practice that’s disciplined on the front end spends its AR follow-up time on genuinely complex problems instead of errors that could have been caught earlier.

Cardiology AR Follow-Up Technology

Most cardiology practices rely on some combination of a practice management system, an EHR, a clearinghouse and payer portals to work AR, supplemented by ERA and EOB data, aging reports and internal work queues. Denial dashboards and reporting tools can make root-cause analysis considerably faster by surfacing patterns automatically instead of requiring someone to build the analysis by hand from raw claims data. Which specific tools make sense depends on practice size, payer mix and existing systems details specific enough to each practice that a general guide can’t responsibly recommend particular software.

How Professional Cardiology AR Follow-Up Services Can Help

Some cardiology practices manage AR follow-up entirely in-house; others bring in specialized support for some or all of it, particularly as claim volume or complexity outpaces internal billing staff capacity. That kind of support tends to add the most value in areas that require sustained, consistent attention: working the aging report on a fixed schedule, tracking claim status across payers, following up on denials and underpayments, tracking appeal deadlines and outcomes, documenting every account clearly, escalating unresolved claims per a defined policy and running the root-cause analysis that catches recurring problems before they compound.

Cardiology-specific AR support also brings familiarity with how the specialty’s mix of diagnostic, interventional and device-related claims tends to get denied or delayed, which shortens the diagnosis step in the workflow described earlier in this guide. Revenue cycle management for cardiology built around this kind of support works alongside a practice’s existing coding, billing and clinical documentation processes rather than replacing the judgment calls that belong with the practice. Results depend on a practice’s specific payer mix, claim history and starting AR condition and no AR follow-up process in-house or outsourced can guarantee a specific reimbursement or collection outcome.

Frequently Asked Questions

What is cardiology AR follow-up? Cardiology AR follow-up is the process of tracking, researching and resolving unpaid or outstanding cardiology claims and patient balances after submission, to determine why payment hasn’t arrived and what action is needed.

Why does AR follow-up matter for cardiology practices specifically? Cardiology claims often carry higher dollar values and more complex coding, authorization and documentation requirements than many other specialties, which creates more points where a claim can stall and more revenue at stake when it does.

What does a cardiology AR specialist actually do day to day? An AR specialist reviews the aging report, checks claim status, reads EOB and ERA data, identifies why payment is pending or absent, coordinates with coding or authorization staff when needed, documents each follow-up and moves accounts toward resolution.

What is an AR aging report? An AR aging report groups outstanding claims and balances by how long they’ve been unpaid, commonly in ranges like 0–30, 31–60, 61–90, 91–120 and 120+ days, so billing teams can prioritize accounts by age alongside other factors.

How should a cardiology practice prioritize which outstanding claims to work first? By weighing dollar value, age, payer, denial reason and how close the account is to a filing or appeal deadline not by working claims in whatever order they appear on a report.

What’s the difference between AR follow-up and denial management? AR follow-up covers all outstanding claims, whatever their status. Denial management is the more specialized subset that applies specifically to claims the payer has denied, focused on identifying the cause and pursuing correction or appeal.

How do you follow up on an unpaid cardiology claim? Verify the original submission details, check current claim status, review the EOB or ERA for a denial or pending reason, determine the correct action correction, resubmission, appeal, or continued follow-up and document the outcome with a specific next follow-up date.

How does Medicare AR follow-up differ from commercial payer follow-up? Medicare follows standardized federal rules: a 12-month timely filing deadline and a defined five-level appeals process with fixed deadlines. Commercial payers set their own timely filing windows, appeal processes and documentation requirements by contract and these vary by payer and plan.

How should underpayments be handled differently from denials? A denial usually needs correction or a formal appeal. An underpayment needs to be compared against the applicable contracted or expected amount first, since not every lower-than-expected payment is actually incorrect deductibles, coinsurance and legitimate adjustment codes can explain the difference.

What information belongs in an AR follow-up note? The date of follow-up, who was contacted, the claim’s current status, the specific reason for non-payment, what the payer actually said, the action taken and the next follow-up date enough detail that a colleague could pick up the account without starting over.

What AR metrics should a cardiology practice track? Days in AR, denial rate, clean claim rate, collection rate, the distribution of AR across aging buckets, appeal overturn rate and underpayment recovery are among the most useful, provided each is defined consistently over time.

Can professional cardiology AR follow-up services help reduce outstanding accounts? Specialized AR support can help by working the aging report consistently, tracking claim status and deadlines across payers and applying cardiology-specific denial and underpayment patterns though outcomes depend on a practice’s specific claim history and payer mix and no service can guarantee a specific reimbursement result.

Key Takeaways

• AR should be monitored on a fixed schedule, not only when cash flow tightens.
• Aging claims need prioritization by dollar value, age, payer and deadline proximity not the order they appear on a report.
• High-dollar and high-risk-aging accounts both deserve dedicated attention, for different reasons.
• Denials, underpayments and pending claims call for different follow-up actions; treating them the same wastes time.
• Specific, dated documentation lets any team member pick up an account without redoing the research.
• Medicare and commercial payer rules aren’t interchangeable commercial terms should always be verified against the current payer contract or manual.
• Recurring denial patterns are worth investigating for root cause, not just resolving one claim at a time.
• AR metrics are only useful when defined consistently and tracked over time, not compared against an unverified external benchmark.

Conclusion

Cardiology AR follow-up isn’t a single task so much as a discipline: reviewing the aging report on a schedule, prioritizing deliberately, diagnosing the actual reason a claim hasn’t paid before acting on it and documenting the work clearly enough that it doesn’t have to be redone. None of that happens automatically. It happens because someone reviews the aging report today, works the accounts that matter most and writes down what they found so the next follow-up starts further ahead than the last one did. Practices that treat AR follow-up this way as an ongoing process rather than an occasional cleanup tend to see the difference show up where it matters most: in what actually gets collected.