Prior authorization sits at the front of the cardiology revenue cycle and when it goes wrong, everything downstream suffers. A stress echo gets scheduled before the payer signs off. A nuclear study is approved under one CPT code, then performed under another. An authorization that looked valid on Monday has expired by the procedure date. Each of these turns into a denial, a delayed payment, or unpaid work that a practice has already delivered.

This guide explains how cardiology prior authorization actually works: what it is, which cardiac services tend to require it, how the process runs step by step, why authorization approval is not the same as payment and how authorization-related denials happen and get prevented. It also covers the differences between traditional Medicare, Medicare Advantage and commercial payers, including the changes that took effect in 2026. The aim is practical accuracy for the people who manage this work, so where a rule depends on the payer, the plan, or the service, that is stated plainly rather than glossed over.

What is cardiology prior authorization?

Cardiology prior authorization is a health plan’s requirement that a provider obtain approval before performing certain cardiac services, such as advanced imaging or select procedures. The plan reviews the request against its coverage policy and medical necessity criteria. An approval lets the service proceed under those criteria, but it does not by itself guarantee that the claim will be paid.

That last point is where a lot of practices lose money. An authorization confirms that the plan reviewed the requested service and, based on the information submitted, agreed it may be covered. It does not confirm that the patient is eligible on the date of service, that benefits have not been exhausted, that the claim will be coded to match the authorization, or that every other adjudication rule will be satisfied. Eligibility, benefits, network status, coding accuracy and timely filing all remain separate conditions. Authorization requirements also change: payers revise medical policies, add or remove services from their lists and switch the vendors that handle their reviews, so a policy that applied last year may not apply now.

Prior authorization compared with other insurance processes

Several administrative terms get used interchangeably in day-to-day conversation, but they describe different steps with different purposes. Payer terminology is not standardized either, so the same word can carry a slightly different operational meaning from one plan to the next. The table below reflects how these terms are generally used.

A referral and a prior authorization are not the same thing and a plan can require one, both, or neither depending on its rules. Precertification and prior authorization overlap heavily, but read each payer’s definitions rather than assuming they mean exactly the same process. Predetermination is worth knowing about for high-cost cases, since it can surface coverage problems before a service is scheduled, though it does not lock in payment.

Why cardiology services may require prior authorization

Payers use prior authorization mainly as a utilization management tool. The stated purpose is to confirm that a requested service meets the plan’s coverage policy and medical necessity criteria before the cost is incurred. Cardiology draws attention here because it includes high-cost advanced imaging and procedures with defined clinical indications.

Common reasons a plan may attach an authorization requirement include medical necessity review for advanced diagnostic imaging, coverage policies that limit how often a study can be repeated, site-of-service rules that steer procedures toward lower-cost settings and device or specialty-specific requirements. None of this means every cardiac service needs authorization. It means the requirement tends to cluster around specific service types and it is set at the payer and plan level rather than by the specialty as a whole.

Which cardiology services may require prior authorization

Authorization requirements vary by payer, plan, member benefits, CPT or HCPCS code, diagnosis, medical policy, place of service, network status, facility, date of service, frequency and clinical circumstances. The patterns below describe where requirements commonly appear, not universal rules. Always verify against the specific plan.

Echocardiography

Transthoracic echocardiography (for example, CPT 93306 or 93307) is frequently performed and, depending on the plan, may or may not require authorization. Transesophageal echocardiography and stress echocardiography are more often subject to review because they are higher-cost or tied to specific indications. Requirements have shifted recently: UnitedHealthcare announced that, beginning January 1, 2026, it would stop requiring prior authorization for certain echocardiogram procedures across several of its plan types. That kind of change is exactly why a practice should confirm current policy rather than rely on last year’s workflow.

Stress testing and nuclear cardiology

A basic exercise ECG stress test (the 93015 through 93018 family) rarely triggers a prior authorization requirement. Stress echocardiography and nuclear myocardial perfusion imaging (the 78451 through 78454 family, plus PET perfusion codes) are a different matter and are commonly reviewed by commercial and Medicare Advantage plans. Approval usually depends on documented indications, prior test history and why a lower-cost study is insufficient. Frequency limits are common, so a repeat study without a documented change in signs or symptoms is a frequent source of medical necessity denials.

Cardiac CT, coronary CT angiography and cardiac MRI

Advanced cross-sectional cardiac imaging is one of the more heavily managed categories. Cardiac CT, coronary CT angiography and cardiac MRI are commonly subject to prior authorization across major commercial payers and Medicare Advantage plans. Payers frequently expect documentation of pre-test probability and an explanation of why the requested study is the appropriate next step. Coding alignment matters here, because the authorized study and the study actually performed have to correspond.

Cardiac monitoring

Ambulatory monitoring covers a range of device types and durations, from Holter monitoring to extended external monitoring and event monitoring. Whether authorization is required can depend on the device category, the monitoring duration, the frequency of prior monitoring and the plan’s policy. Because the codes and coverage rules differ by monitoring type, this is an area where checking the specific policy pays off.

Cardiac catheterization and coronary angiography

Diagnostic catheterization and coronary angiography requirements vary by payer, setting and clinical scenario. Emergent and inpatient cases are often handled differently from scheduled outpatient studies and many plans waive authorization in emergency, inpatient, or observation settings. Documentation of medical necessity, the correct provider and facility information and accurate coding all support these claims regardless of whether a formal authorization applies.

Electrophysiology and device-related services

Ablation procedures, pacemaker and implantable device procedures and related device monitoring can carry complex authorization requirements and these often involve facility and device-specific considerations. Because the clinical and coding detail is dense, EP and device services benefit from careful pre-service verification of what the plan requires and how it wants the request submitted.

What information is commonly needed for authorization

Requirements differ by payer and service and no single request needs every item below. A typical cardiology authorization request may call for:

• Patient demographics and member ID
• Insurance and plan information
• Ordering or referring provider and rendering provider details, including NPI
• Facility information and place of service
• The specific CPT or HCPCS code being requested
• The supporting ICD-10-CM diagnosis
• Date of service and requested units or frequency
• Relevant clinical history, symptoms and examination findings
• Prior diagnostic results, imaging reports, or test history
• Documentation of previous treatment or testing where the policy requires it
• A clear clinical rationale linking the diagnosis to the requested service

The closer the submitted information matches the payer’s medical policy criteria, the smoother the review tends to go. Thin or generic documentation is a common reason a request stalls or is denied.

How the cardiology prior authorization process works

A dependable authorization workflow runs in a defined sequence. Skipping steps is where errors creep in.

1. Verify patient eligibility for the date of service.
2. Verify benefits, including any limits or exclusions.
3. Identify the exact payer and plan, including the correct product type.
4. Determine whether the specific service requires authorization under that plan.
5. Identify the precise service being requested.
6. Confirm the CPT or HCPCS code and any code-specific requirements.
7. Confirm the supporting ICD-10-CM diagnosis.
8. Review the payer’s applicable medical policy.
9. Gather the clinical documentation the policy calls for.
10. Submit the authorization request through the correct channel.
11. Record the authorization or reference number.
12. Confirm the authorized date range.
13. Confirm the authorized service and code.
14. Confirm authorized units or visits where applicable.
15. Confirm the authorized provider and facility.
16. Monitor authorization status until a decision is issued.
17. Communicate approval or denial to scheduling and clinical staff.
18. Update scheduling and billing records with the authorization details.
19. Reverify the authorization if the service, provider, facility, or date changes.
20. Track expiration and remaining units.
21. Confirm the claim matches the authorization before submission.

Obtaining an authorization number is only part of the job. An authorization is tied to a specific service, code, provider, facility, date range and often a unit count. If any of those change after the number is issued, the authorization may no longer match the claim and a mismatch can produce a denial even though an approval technically exists. This is why the final step, comparing the claim against the authorization before it goes out, matters as much as securing the authorization in the first place.

Medical necessity and prior authorization

Medical necessity is the clinical justification that a service is appropriate for the patient’s condition under the payer’s criteria. It is not established by a diagnosis code alone. A valid ICD-10-CM code points at a condition, but the medical record has to show why the requested cardiac service is reasonable and necessary for that patient, consistent with the plan’s medical policy.

It helps to keep five concepts separate, because a claim can fail on any one of them even when the others are fine:

• Authorization approval means the plan reviewed and approved the specific service in advance.
• Coverage means the service is a benefit under the member’s plan.
• Medical necessity means the documentation supports the service under the payer’s clinical criteria.
• Eligibility means the patient had active coverage on the date of service.
• Payment means the claim satisfied every adjudication rule and was reimbursed.

Approval addresses one of these. The clinical record still has to support the request, medical necessity criteria still apply and payment still depends on the rest.

How CPT, HCPCS and ICD-10-CM codes affect authorization

Coding drives authorization because the request is built around specific codes. The CPT or HCPCS code identifies the service and the ICD-10-CM code supplies the diagnosis that supports it. When the diagnosis does not align with the requested procedure under the payer’s policy, the request can be denied for medical necessity even if both codes are individually valid.

Code specificity matters. A vague or unsupported diagnosis weakens the request. So does a mismatch between the authorized quantity and what is actually performed, or between the authorized procedure and the procedure delivered. If the plan changes during the episode, or the clinical situation shifts and the service performed differs from what was authorized, the authorization has to be corrected or a new one obtained. Coding should always reflect the service actually rendered and the documentation in the record. Selecting a diagnosis or procedure code for the purpose of getting an authorization through, rather than because it describes the encounter, is not acceptable and creates compliance exposure. For a deeper treatment of documentation standards, this pairs well with a review of cardiology documentation requirements.

Common cardiology prior authorization denials

Authorization-related denials tend to fall into recognizable categories. Not every denial is a payer error; many trace back to a preventable process gap on the practice side.

For each of these, the pattern is the same: identify the specific reason on the remittance advice or explanation of benefits, review the authorization and the claim against it and fix the process step that allowed the gap. A structured approach to this is covered in a cardiology claim denials guide.

Prior authorization versus claim denial

Authorization and claim adjudication are two separate events and a valid authorization does not guarantee a paid claim. Several situations show the gap:

• Authorization was never obtained, so the claim denies for no authorization on file.
• Authorization was obtained but did not match the service, provider, facility, or date, so the claim denies for a mismatch.
• Authorization was valid, but the claim carried incorrect information such as the wrong code or member ID.
• Authorization was approved, but another coverage requirement, such as a benefit limit, failed.
• Authorization was valid, but documentation was insufficient for a separate payer requirement at claim review.
• Authorization was valid, but the claim went to the wrong payer.
• Authorization was valid, but timely filing or another claim rule was not met.

The takeaway for revenue cycle staff is that authorization work and claim accuracy have to line up. An approval secures one condition; the claim still has to satisfy the rest.

Documentation for cardiology prior authorization

Documentation supports the request at authorization and again if the claim is reviewed or appealed. It is worth distinguishing two things: records that clinically support the requested service and records a specific payer policy explicitly requires. The first is general good practice; the second is payer-dependent and not every payer asks for the same items.

Records that commonly support cardiology authorization and appeals include office notes, relevant history, examination findings, the clinical assessment, prior diagnostic results, imaging reports, ECG or EKG results, stress test results, previous procedure reports and treatment history. The stronger the link between the documented clinical picture and the requested service under the plan’s criteria, the better the request holds up. For imaging in particular, payers often expect evidence of prior, less costly testing when their policy calls for it.

Common cardiology prior authorization mistakes

Authorization tracking

Tracking is what keeps authorizations from expiring, duplicating, or drifting out of alignment with the claim. A working log captures the patient, payer, plan, procedure, CPT or HCPCS code, diagnosis, ordering and rendering providers, facility, authorization number, submission date, approval date, effective and expiration dates, authorized units, used units, remaining units, status, any denial reason and appeal status.

Maintained consistently, this record prevents three recurring problems: procedures performed on expired authorizations, duplicate requests for services already approved and mismatches between what was authorized and what gets billed. It also feeds denial analysis, because the same fields that track an authorization are the ones you sort by when you look for patterns.

Denial root-cause analysis and prior authorization metrics

Recurring authorization denials usually have a source that shows up when you group the data. Tracking denials by payer, plan, CPT or HCPCS code, ICD-10-CM code, provider, facility, location, procedure type, date of service, authorization status, submission timing, denial reason, dollar amount, frequency and appeal outcome tends to expose where the process is breaking. A cluster tied to one payer and one code often points at a medical policy the practice is not meeting. A cluster tied to one scheduler or workflow points at a training or handoff gap. Patterns like these reveal scheduling problems, verification gaps, coding issues, documentation gaps, staff training needs, payer-specific workflow issues, tracking failures, communication breakdowns, or system configuration problems.

A handful of metrics make this measurable. Organizations define these differently, so state the denominator clearly whenever you report one. A common example:

Authorization approval rate = approved authorization requests ÷ completed authorization decisions × 100

Other useful measures include authorization request volume, denial rate, pending authorization volume, average turnaround time, authorization-related claim denial rate, the dollar value of authorization denials, rework volume, appeal overturn rate, the share of procedures delayed due to authorization, expired authorization volume and authorization-related accounts receivable. Track the trend rather than a single number and avoid comparing your figures to invented industry benchmarks, since reliable, current benchmarks for this specific metric set are not consistently published.

Medicare considerations

Traditional Medicare and Medicare Advantage handle prior authorization very differently and Medicare rules should not be assumed to apply to commercial plans.

Historically, Original (traditional, fee-for-service) Medicare has rarely used prior authorization. KFF reported that in 2023 there were about 0.01 prior authorization determinations per beneficiary in traditional Medicare, compared with 1.8 per beneficiary in Medicare Advantage. That gap is the practical reason many cardiology practices see far more authorization friction on their MA and commercial volume than on traditional Medicare.

That picture is changing at the margins. On January 1, 2026, the CMS Innovation Center launched the Wasteful and Inappropriate Service Reduction (WISeR) Model, which introduces prior authorization and prepayment review into traditional Medicare for a defined list of select services CMS considers prone to overuse. According to CMS, the model runs through December 31, 2031 and operates in six states: Arizona, New Jersey, Ohio, Oklahoma, Texas and Washington. It applies to services furnished on or after January 15, 2026, uses third-party vendors with artificial intelligence tools alongside human clinical review and an approved request is valid for 120 days. Providers can request a peer-to-peer review and may resubmit denied requests. WISeR applies to traditional Medicare, not Medicare Advantage. The specific service list is published in the CMS WISeR Provider and Supplier Operational Guide and it centers on a defined set of services rather than routine cardiology across the board. Practices in the six model states should check the current CPT list in that guide rather than assume any given cardiac service is or is not included, because CMS has adjusted the list over time.

Beyond WISeR, traditional Medicare coverage still runs on medical necessity, National Coverage Determinations and Local Coverage Determinations issued by Medicare Administrative Contractors. A service can be fully covered yet still be denied if an LCD’s criteria are not met, which is common for repeat cardiac imaging performed without a documented change in the clinical picture. One more point specific to advanced imaging: the Appropriate Use Criteria program created under the Protecting Access to Medicare Act, which would have required ordering providers to consult a qualified clinical decision support mechanism for advanced diagnostic imaging, was repeatedly delayed by CMS and is not being enforced as a federal payment condition. There is no active federal AUC mandate in 2026, though some commercial payers apply their own appropriateness criteria drawn from professional society guidelines.

Commercial payer considerations

Commercial insurance requirements often differ substantially from Medicare and they differ from one another. Differences show up in which services need authorization, whether a referral is also required, the medical policies and coverage criteria applied, network participation rules, the submission channel (portal versus phone), documentation expectations, appeal and reconsideration procedures, peer-to-peer options, deadlines and retroactive authorization policies.

Two features of the commercial environment are worth understanding. First, many major payers delegate imaging and cardiology utilization management to specialized benefit management vendors, so the review for a cardiac imaging study may run through a third party rather than the plan directly and the submission route can differ by procedure. Confirm the correct route from the plan’s provider portal or the patient’s denial letter before submitting. Second, requirements move. UnitedHealthcare published a provider notice stating that, effective January 1, 2026, it would remove prior authorization for certain nuclear imaging, obstetrical ultrasound and echocardiogram procedures across several of its plan types. Treat any single payer change as specific to that payer and confirm the exact codes and plan types against the payer’s own current policy before relying on it.

How to appeal a cardiology prior authorization denial

Appeal procedures, deadlines, documentation requirements and review levels vary by payer and by the type of denial, so read the denial before you respond. A workable sequence:

1. Read the denial reason carefully and identify exactly what the payer cited.
2. Identify the specific policy or requirement involved.
3. Determine whether the denial is administrative, clinical, coding-related, or coverage-related, because that determines the fix.
4. Review the original authorization request as submitted.
5. Review the medical record against the request.
6. Review the payer’s applicable medical policy.
7. Identify what was missing, conflicting, or unaddressed.
8. Gather the supporting documentation that speaks to the cited criteria.
9. Prepare a concise appeal or reconsideration request.
10. Explain how the documentation supports the service under the policy.
11. Follow the payer’s required submission process.
12. Meet the applicable deadline.
13. Track the appeal to resolution.
14. Record the outcome and the root cause so the same denial can be prevented.

An administrative denial, such as a missing authorization number on the claim, is corrected differently from a clinical denial that needs additional records or a peer-to-peer review. Matching the response to the denial type saves time and improves the odds of an overturn.

How prior authorization affects cardiology revenue cycle management

Front-end authorization work has an outsized effect on downstream performance. When authorizations are missed, mismatched, or expired, the results are claim denials, growing accounts receivable, delayed reimbursement, rescheduled procedures, added rework, heavier appeal volume and more staff time spent on avoidable follow-up. Every one of those carries an administrative cost and slows cash flow.

The relationship runs in one direction: accurate, complete authorization at the front end produces cleaner claims and fewer denials at the back end. That is why authorization sits inside broader revenue cycle management for cardiology rather than off to the side. Investing in the verification and tracking steps up front reduces the far more expensive work of chasing denials later.

Practical hypothetical cardiology authorization scenarios

The following scenarios are hypothetical and illustrative. They are not real patient cases and they do not describe any specific payer’s policy or promise any outcome.

Example 1: Echocardiogram authorization mismatch. A practice obtains authorization for a transthoracic echocardiogram, but the study performed and billed is a transesophageal echocardiogram. The billed code does not match the authorized code, so the claim denies. Before billing, staff should compare the authorized service to the service actually performed and, when they differ, correct or obtain the appropriate authorization.

Example 2: Cardiac imaging denied for insufficient documentation. A nuclear perfusion study is requested, but the submitted records do not address the payer’s medical policy criteria, such as prior test history or the clinical indication. The request is denied for medical necessity. Reviewing the specific policy and submitting records that speak to its criteria reduces this risk.

Example 3: Authorization obtained for the wrong CPT. An authorization is secured for one imaging code, but a different code is performed and billed. The mismatch triggers a denial. Confirming the intended code before submission and reconciling the code at claim time, prevents it.

Example 4: Authorization expired before the procedure date. An approval is valid for a set window, the procedure is rescheduled and the new date falls outside the authorized range. The claim denies for an expired authorization. Tracking effective and expiration dates and reverifying when scheduling changes, addresses this tracking failure.

Example 5: Provider or facility mismatch. A study is authorized for one rendering provider or facility but performed at another. The claim denies for a mismatch. Verifying the authorized provider and facility against the actual site of service prevents it.

Example 6: Authorization approved but claim denied. An authorization is valid, yet the claim still denies, because eligibility lapsed, the claim went to the wrong payer, a benefit limit was reached, or timely filing was missed. This illustrates the central point that authorization approval does not guarantee payment, since separate adjudication rules still apply.

When professional cardiology prior authorization support may help

In-house teams can manage authorization well and many do. Professional support tends to become useful when the volume or complexity outpaces available staff time. Situations where outside help is often considered include high authorization volume across many payers, multiple payer portals and differing submission routes, repeated authorization denials, documentation follow-up that competes with clinical work, complex EP and device or advanced imaging requirements and appeal and accounts receivable backlogs that build faster than a small team can clear them.

Where those problems are present, targeted services can address them directly: eligibility and benefits verification tied to the cardiology insurance verification workflow, authorization handling and tracking as part of end-to-end revenue cycle management, structured denial management for authorization-related denials and appeals and accurate cardiology medical coding so authorizations and claims align. For imaging-heavy and EP-heavy practices specifically, service-line support such as cardiac imaging billing and electrophysiology billing can match the areas where authorization requirements are densest. The point is to solve a defined problem, not to replace a functioning internal process.

Frequently asked questions

What is cardiology prior authorization? It is a health plan’s requirement that a provider get approval before performing certain cardiac services. The plan reviews the request against its coverage policy and medical necessity criteria. Approval lets the service proceed under those criteria but does not guarantee the claim will be paid.

Why do cardiology procedures require prior authorization? Payers use it as a utilization management tool to confirm that higher-cost services, particularly advanced imaging, meet the plan’s coverage and medical necessity criteria before they are performed. The requirement is set by the payer and plan, not by the specialty.

Which cardiology services may require prior authorization? Advanced imaging is the most common category, including stress echocardiography, nuclear myocardial perfusion imaging, cardiac CT, coronary CT angiography and cardiac MRI. Certain monitoring, EP and device services may also require it. Requirements vary by payer and plan.

Does every cardiology procedure require prior authorization? No. Basic services such as a standard exercise ECG stress test often do not require it, while advanced imaging frequently does. Requirements depend on the payer, plan, code, diagnosis, setting and policy.

What information is needed for cardiology prior authorization? Commonly patient and insurance details, ordering and rendering provider information, facility, the CPT or HCPCS code, the supporting ICD-10-CM diagnosis, date of service, requested units and clinical documentation such as history, findings and prior test results. Not every request needs every item.

How long does cardiology prior authorization take? Turnaround varies by payer, service and submission method and by whether additional records are requested. Because timeframes differ, submit early, track pending requests and confirm the plan’s stated timelines rather than assuming a fixed number.

Can a prior authorization be denied? Yes. Common reasons include medical necessity not being established, missing documentation, a code or diagnosis mismatch, frequency limits, or the service not being a covered benefit. Denials can often be appealed or resubmitted with additional information.

Does prior authorization guarantee insurance payment? No. An approval addresses one condition. Eligibility, benefits, network status, coding accuracy, timely filing and other adjudication rules still apply, so a valid authorization can coexist with a denied claim.

What is the difference between prior authorization and eligibility verification? Eligibility verification confirms the patient has active coverage on a date of service. Prior authorization is plan approval for a specific service. A patient can be eligible while a service still requires and lacks, authorization.

What is the difference between prior authorization and a referral? A referral is approval for the patient to see a specialist, often from a primary care provider or the plan. Prior authorization is approval for a specific service or procedure. A plan may require one, both, or neither.

Can incorrect CPT or ICD-10-CM coding affect authorization? Yes. The request is built around specific codes and a diagnosis that does not support the procedure under the payer’s policy can lead to a medical necessity denial. Codes should reflect the actual service and documentation, never be chosen simply to secure approval.

What happens if authorization expires before the procedure? If the service falls outside the authorized date range, the claim can be denied for an expired authorization. Reverify dates when scheduling changes and obtain a new authorization if needed before the procedure.

How do you appeal a cardiology prior authorization denial? Read the denial reason, identify the policy involved, determine whether it is administrative or clinical, review the request and the record against the policy, gather supporting documentation and submit a concise appeal or reconsideration through the payer’s process within its deadline. A peer-to-peer review may be available for clinical denials.

How does prior authorization affect cardiology revenue cycle management? Missed or mismatched authorizations drive claim denials, accounts receivable growth, delayed payments and rework. Accurate front-end authorization produces cleaner claims and fewer downstream denials, which is why it is treated as part of the revenue cycle rather than a standalone task.

Key takeaways

• Cardiology prior authorization is plan approval for a specific service before it is performed and it is not a guarantee of payment.
• Requirements vary by payer, plan, code, diagnosis, setting, network status, facility and date, so verify against the specific plan every time.
• Advanced imaging, including stress echo, nuclear perfusion, cardiac CT and CTA and cardiac MRI, is the most commonly managed category.
• An authorization is tied to a service, code, provider, facility, date range and often a unit count and a change to any of those can cause a mismatch denial.
• Traditional Medicare has rarely used prior authorization, though the WISeR Model added it for select services in six states in 2026; Medicare Advantage and commercial plans use it far more.
• Tracking, root-cause analysis and clear metrics turn recurring denials into fixable process problems.

Conclusion

Cardiology prior authorization rewards discipline at the front end. The practices that lose the least revenue to it are the ones that verify eligibility and benefits before scheduling, confirm whether each service needs authorization under the specific plan, submit complete documentation that speaks to the payer’s criteria, capture and track every authorization detail and reconcile the claim against the authorization before it goes out. Because the rules differ across traditional Medicare, Medicare Advantage and commercial payers and because those rules changed again in 2026, the reliable habit is to confirm current policy for the exact payer and service rather than carry forward last year’s assumptions. Handled that way, authorization stops being a steady source of denials and becomes a predictable, manageable step in the revenue cycle.