CPT 93922: ABI Billing, Documentation and Reimbursement Guide

CPT 93922 reports a limited, bilateral, noninvasive physiologic study of the arteries in the arms or legs, usually performed at one or two testing levels. A lower-extremity study commonly pairs ankle-brachial index measurements with a second qualifying test, such as Doppler waveform recording, volume plethysmography, or transcutaneous oxygen measurement. The code is not interchangeable with duplex imaging, and a simple ABI taken during an exam does not automatically qualify for separate billing. Coverage and payment still depend on documentation and the payer’s own policy.

This guide is written for the people who have to make that call: practice owners, vascular and cardiology providers, podiatrists, wound-care teams, coders, and billing managers who need the study and the claim to match. One O Seven RCM built this resource around the coding, documentation, and revenue-cycle decisions that come after the code definition, not before it.

The American Medical Association owns CPT as a uniform system of five-digit codes and descriptive terms for reporting medical services. AMA CPT code set Everything below builds from that starting point toward the parts that decide whether the claim gets paid.

What Is CPT 93922?

The code reports a limited, bilateral, noninvasive physiologic evaluation of extremity arteries at one or two levels. The service is nonimaging: it measures pressure and flow response rather than producing pictures of the vessel. That distinction, not the number of levels tested, is what separates a physiologic study from a duplex scan.

Plain-Language Definition

Four words in the descriptor carry most of the weight. Physiologic means the test measures function and blood-flow response, not anatomy. Noninvasive means no catheter and no incision. Bilateral means the code is built around testing both sides. Limited means one or two testing levels, not a full multilevel map of the limb. The service can involve either the arms or the legs, but whichever one gets billed has to match what the technician recorded.

What “Nonimaging” Means

Physiologic studies evaluate pressure and waveform data. Duplex studies add ultrasound imaging on top of Doppler flow information. CMS draws that same line: physiologic testing produces functional measurements, and duplex testing produces vessel images plus flow data. CMS arterial vascular study policy That does not mean ultrasound technology never touches a physiologic study. It means the deliverable is different: a number and a waveform, not a picture.

Why the Code Matters to Providers

Getting this code right affects more than one claim line. It drives charge capture, sets up the medical-necessity review, and becomes the record an auditor pulls first if a payer asks questions. A coder who can define the service correctly can also defend it later.

The next question providers ask is what has to happen during the visit for that code to hold up.

What Tests and Measurements Are Included in CPT 93922?

The service commonly includes bilateral pressure measurements and ABI calculations plus a qualifying physiologic assessment, such as bidirectional Doppler waveform analysis, volume plethysmography, or transcutaneous oxygen measurement, at one or two levels. No single combination applies to every patient or every payer.

Lower-Extremity Testing Components

A lower-extremity study builds a relationship between brachial systolic pressure and pressure at the ankle, usually recorded at the posterior tibial artery and the anterior tibial or dorsalis pedis artery. Dividing ankle pressure by brachial pressure produces the ABI value at each tested level.

Entering one ABI number is not the same as performing the study. The record has to show where the pressures came from and how the technician calculated the ratio, because a reviewer cannot verify a number that has no source data behind it.

Qualifying Physiologic Assessments

Not every study runs all four methods. The record only needs to show which method was used and why it fit the clinical question in front of the technician.

Upper-Extremity Testing

This code is not a lower-extremity-only tool. An upper-extremity study looks at arterial pressures in the arm, forearm, wrist, or digits, paired with waveform or physiologic assessment the same way a leg study is. Search demand runs heavily toward ABI and the legs, so this use case comes up less often, but the same documentation standard applies either way.

What “One or Two Levels” Means

Testing levels are physical sites along the limb, not separate visits or separate diagnoses. In the leg, that usually means thigh, calf, ankle, or metatarsal and toe level. Two levels is the ceiling for this code. A study that reaches three or more levels moves into different code territory, which the next section covers in detail.

Practices that run vascular studies routinely should check that charge capture reflects the service the record supports, not the equipment sitting in the exam room. Mismatches here are one of the more common reasons medical billing services end up rebuilding a claim after a denial instead of before submission.

Is a Simple ABI Billable as CPT 93922?

A simple ankle-brachial index is not automatically separately billable under this code. CMS guidance treats an ABI performed as part of the physical exam, or an assessment done only with a handheld Doppler, as something that may already be built into the visit rather than a distinct diagnostic service. Separate billing depends on meeting the full procedure definition, the documentation standard, medical necessity, and the payer’s own policy. CMS guidance on simple ABI testing

Simple ABI Assessment

A few signals point toward “part of the exam” rather than a billable study: pressure comparison performed casually during the visit, audio-only handheld Doppler with no recorded waveform, no plethysmographic component, no permanent output, and no distinct clinical reason for the test. None of that means every handheld device is automatically nonbillable. The problem is what got performed and documented, not the brand stamped on the device.

Separately Reportable Physiologic Study

A defensible study needs a valid diagnostic reason on the order, appropriate bilateral or reduced testing, the physiologic measurements the code requires, a qualifying additional assessment, recorded results, an interpretation, and evidence that the findings changed how the patient was managed. Payer-specific coverage rules still apply on top of all of that.

Coders and providers ask a handful of versions of the same question here: does ABI alone qualify, can a handheld Doppler get billed under this code, and what does the study need on top of the ABI number. The answer to all three sits in the table above. The record has to show a distinct, interpreted, physiologic study, not a pressure check that happened to get written down.

If you are not sure whether your ABI workflow crosses that line consistently, a medical billing audit can review the test record, the charge-capture process, and the payer requirements before the same gap shows up on more claims.

CPT 93922 vs 93923, 93924, 93925 and 93926

The primary distinction across this code family is the extent of testing and whether the study is physiologic or imaging-based. CPT 93922 covers a limited bilateral study at one or two levels. 93923 covers a complete bilateral study at three or more levels, or a qualifying study with provocative functional maneuvers. 93924 adds treadmill exercise testing. 93925 and 93926 move into duplex imaging entirely.

CPT 93922 vs 93923

Level count is what separates these two codes, not general effort or complexity. The lower-numbered code stays at one or two tested levels; 93923 either reaches three or more levels or brings in a provocative functional maneuver as part of the protocol. Saying a study involved “more testing” does not tell a reviewer which code applies. The specific levels, or the specific maneuver, has to be named in the record.

CPT 93922 vs 93924

93924 is a resting limited physiologic study combined with standardized treadmill testing: measurements at rest, then immediate and timed measurements after exercise, tracking claudication onset, walking duration, and recovery. It is not a unilateral version of the base code. The two describe different protocols, not different amounts of the same protocol.

CPT 93922 vs 93925 and 93926

The code in this guide stays physiologic and nonimaging throughout. 93925 is complete bilateral lower-extremity arterial duplex imaging, and 93926 is unilateral or limited lower-extremity arterial duplex imaging. A physiologic study and a duplex study answer different clinical questions, and owning the ultrasound equipment used for one does not determine which code applies to the other. CMS keeps this same line between nonimaging physiologic testing and duplex studies that generate vessel images and flow data. CMS arterial vascular study policy What was performed and documented decides the code, not what would pay better.

Do Not Confuse Arterial and Venous Studies

This code evaluates arterial physiology only. It has nothing to do with venous duplex testing, and the two should never get billed as if they measure the same thing. If your practice also documents venous studies, keep the arterial and venous workups in separate records with separate clinical justification, since a payer reviewing one will expect to see the other stand on its own.

Confirm every code description in this table against the current licensed AMA CPT source before this article goes live. Code selection comes down to the documented service, not the reimbursement a practice would prefer.

When Is CPT 93922 Clinically Appropriate?

Clinical appropriateness, code selection, and payer coverage are three separate decisions that happen to overlap on the same claim. A test can be clinically reasonable without meeting a specific payer’s billing requirements, and a diagnosis that shows up in a coverage policy still needs patient-specific documentation behind it.

History or Examination Findings Suggestive of PAD

The clinical picture that typically supports testing includes exertional leg symptoms, claudication, ischemic rest pain, pulses that are diminished or absent, a cool extremity, color or trophic skin changes, a nonhealing wound, ulceration, gangrene, or general suspicion of arterial insufficiency. None of these findings alone guarantees a payer will cover the claim. They establish why the test made clinical sense.

Additional Clinical Contexts

Testing also comes up before a possible intervention, after revascularization when the picture supports it, when a provider needs to gauge wound-healing potential, when a patient has a noncompressible ABI and needs a different test, and in upper-extremity ischemic symptoms. No single list of diagnoses guarantees coverage across every plan.

Clinical Screening vs Payer Coverage

A professional guideline can support ABI testing in an at-risk patient without that recommendation guaranteeing CPT billing criteria or a specific payer’s coverage rules are satisfied. The 2024 ACC/AHA PAD guideline places resting ABI and additional physiologic testing inside its diagnostic pathway for patients with a history or exam findings suggestive of PAD, and it also names PVR, toe-brachial index, skin perfusion pressure, and transcutaneous oxygen pressure as relevant physiologic tools. 2024 ACC/AHA PAD guideline

Cardiology, podiatry, vascular, and wound-care practices run into this gap most often, since their patient mix produces a steady stream of borderline cases. specialty medical billing services built around those specialties can show a practice where a clinical finding, a procedure record, and a payer policy stop lining up.

The clinical reason for testing still has to turn into a complete order, a study record, and an interpretation that can carry the claim. That record is the subject of the next section.

CPT 93922 Documentation Requirements for a Defensible Claim

A defensible claim needs more than a code and an ABI number. The record has to show who ordered the test, why it was needed, what measurements and physiologic methods were performed, what the results showed, who interpreted the study, and how the findings changed the patient’s care. CMS expects diagnostic tests to be ordered by the practitioner treating the patient and used to manage a specific medical problem, supported by signs or symptoms of altered blood flow and free of unnecessary repeat testing. CMS noninvasive vascular study guidance

Order and Clinical Indication

The order should name the ordering practitioner, the date, the reason for the test, the relevant symptoms, exam findings, prior vascular history, the clinical question being asked, and how the result will be used. Copying a diagnosis code onto the order is not the same as documenting medical necessity.

Procedure Details

The technical record should specify upper or lower extremity, whether the study was bilateral, unilateral, or reduced, the testing levels, the arteries or sites evaluated, brachial and ankle pressures where applicable, the ABI calculations, the physiologic method used, any technical limitations, patient factors affecting quality, and the tracings or permanent output the equipment generated.

Results and Interpretation

Results need numeric values, normal and abnormal findings, waveform characteristics, laterality, severity where the data supports it, comparison against prior studies when relevant, a final impression, the interpreting professional’s identity, a signature and date, and a note on how the finding affects management.

Permanent Record and Audit Readiness

Practices should retain the pressure measurements, the waveform or plethysmographic output, the calculations, the interpretation, the order, the clinical note, prior-authorization records where applicable, and any payer correspondence tied to the claim. There is no universal 24-hour deadline for finishing this documentation, but standards do vary by MAC and by payer, so treat this checklist as a floor, not a ceiling.

One incomplete vascular-study template can produce the same denial across dozens of claims before anyone notices the pattern. A coding and billing audit can review documentation patterns across a sample of charts and point to exactly where the workflow is losing support before a payer finds it first.

Once the service and the record are complete, the billing team still has to work out whether the diagnosis, the modifiers, the units, and the payer’s own rules line up enough to get the claim paid. That is where Part 2 of this guide picks up.

Medical Necessity and ICD-10-CM Coding for CPT 93922

Medical necessity depends on the patient’s documented condition, the reason the study was ordered, and the payer policy that applies to the claim. An ICD-10-CM code should describe the condition the medical record supports. A diagnosis that shows up in a coverage article does not justify using that code when the chart does not back it up.

CMS Article A57593 requires the order to identify the clinical indication, requires documentation that demonstrates the study was reasonable and necessary, and requires the results to be used in managing the patient’s problem. The article lists hundreds of diagnosis codes, which is itself a signal that no short universal list can stand in for patient-specific documentation. CMS Article A57593

Medical Necessity Starts With the Clinical Record

The record should establish the symptoms or abnormal findings, the condition under evaluation, the clinical question the study answers, why the result will change treatment or management, why the study is diagnostic rather than routine screening, and why repeat testing is warranted if a prior study already exists. One symptom on its own does not guarantee coverage.

Diagnosis Families Commonly Associated With Arterial Testing

Diagnosis families that commonly support arterial testing include atherosclerosis of the extremity arteries, intermittent claudication, ischemic rest pain, ulceration, gangrene, diabetes with peripheral angiopathy, arterial embolism or thrombosis, vascular injury, and graft or post-procedural conditions, among other documented arterial disorders. None of this is an approved list. Diagnosis-code acceptance shifts by payer, MAC jurisdiction, date of service, policy version, and clinical context.

Specificity Requirements

Diagnosis selection often needs laterality, clinical stage (claudication, rest pain, ulceration, or gangrene), ulcer location, diabetes type, presence of gangrene, whether the vessel is native or a bypass graft, and the correct initial, subsequent, or sequela character.

Payer and MAC Verification Workflow

1. Identify the patient’s insurance plan.
2. Determine the relevant Medicare Administrative Contractor or commercial payer.
3. Locate the policy in effect on the date of service.
4. Confirm the procedure is addressed in that policy.
5. Review the policy’s diagnosis-code group.
6. Select the most specific code the chart supports.
7. Confirm prior authorization and frequency separately.
8. Keep a record of the policy version used.

Searches for “ankle brachial index cpt code” often land here by accident: the searcher wants the procedure code and finds a diagnosis discussion instead. The two questions are related but not interchangeable.

Accurate medical billing requires the diagnosis, the documented findings, the performed service, and the payer policy to agree before the claim goes out the door.

After medical necessity and diagnosis specificity are settled, the billing team still has to decide how laterality, units, and modifiers get reported on the claim.

Bilateral Reporting, Units, and Component Modifiers

CPT 93922 is bilateral by definition, so a provider should not append modifier 50 to show both extremities were tested. Medicare’s NCCI manual assigns the code a Medically Unlikely Edit value of two, and that value exists because upper- and lower-extremity studies can occasionally happen on the same date, not because each leg is supposed to bill as a separate unit. The 2026 Medicare NCCI Policy Manual states that 93922 and 93923 describe bilateral studies by definition and that modifier 50 does not apply when the descriptor already builds bilateral testing into the code. 2026 Medicare NCCI Policy Manual

Bilateral Service and Modifier 50

Routine bilateral studies report as one service line, not duplicate lines for the right and left leg. Commercial payer systems do not always process claims the same way Medicare does, so verify the specific payer’s instruction before assuming the rule carries over.

What the MUE of Two Means

MUE stands for Medically Unlikely Edit. A value of two is not permission to bill two units on every encounter. It reflects the possibility that a patient received both an upper- and a lower-extremity study on the same date, and the documentation has to support two distinct anatomic service groups for that to hold up. This is one of the more commonly misread rules in vascular billing, and it earns a citation because so many practices treat “MUE of two” as “bill two units” without checking what the value protects against.

Unilateral or Reduced Testing

When only one side gets tested, or the bilateral service cannot be completed, review whether the performed service remains reportable, whether modifier 52 fits, whether the payer has its own unilateral billing instruction, whether the report explains the reduction, and whether the charge needs adjusting. Modifier 52 may fit a reduced service, but confirm it against current payer instructions and the actual circumstances documented rather than defaulting to it automatically.

Professional and Technical Components

Modifier 26 identifies the professional interpretation when it is separately reportable. TC identifies the technical component when it is separately reportable. Global reporting can apply when one entity furnishes both. Site of service, ownership, employment arrangements, and payer policy all affect how components get billed, so check the current Physician Fee Schedule indicators before submitting a split claim.

NCCI Edits and Same-Day Vascular Studies

Reporting CPT 93922 with another vascular study on the same date depends on the code pair, the anatomic site, the clinical purpose, the payer edit, and the documentation behind both services. A different diagnosis on each claim line does not, by itself, prove the services were separate. The record has to support a study that is distinct in substance, not only on paper, wherever an NCCI-associated modifier gets used.

CMS states plainly that modifier 59 gets used incorrectly on a regular basis and should only apply when no more descriptive modifier fits. Documentation has to support the distinct service, and different diagnoses alone do not override an edit. CMS modifier 59 guidance

Check the Code Pair Before Submitting

1. Identify every CPT and HCPCS code reported that day.
2. Check the current NCCI procedure-to-procedure edit.
3. Review the Correct Coding Modifier Indicator.
4. Determine whether the services overlap.
5. Confirm whether the edit allows a modifier at all.
6. Review the payer’s own code-edit policy.
7. Confirm the record supports distinctness.
8. Submit only what the documentation can defend.

A PTP edit pairs a Column 1 code with a Column 2 code and assigns a Correct Coding Modifier Indicator, or CCMI, that determines whether a modifier can override the edit. None of that is a reason to reproduce entire NCCI data tables here; the workflow above is what matters day to day.

Physiologic and Duplex Studies During the Same Encounter

A physiologic study and an arterial duplex study answer different clinical questions, but that difference does not automatically clear the way for separate payment. Look for a separate diagnostic purpose, distinct findings, abnormal physiologic results that justify a follow-up duplex, trauma or thromboembolic concerns where relevant, and payer-specific medical-necessity standards on each service. CMS Article A57593 allows duplex scanning and physiologic studies to be reimbursed during the same encounter in specified circumstances when the documentation supports medical necessity, but that is a MAC-specific rule, not a blanket national promise. CMS Article A57593

Arterial and Venous Studies on the Same Date

Arterial and venous tests should never get combined for scheduling convenience alone. The record needs separate arterial and venous clinical concerns, a distinct order or clearly distinct diagnostic purpose, independent findings for each study, and no duplicate measurement folded into both.

Modifier 59 and X Modifiers

Modifier 59 marks a distinct procedural service. XE marks a separate encounter. XP marks a separate practitioner. XS marks a separate structure. XU marks an unusual, non-overlapping service. Use the most specific X modifier the payer accepts, and never apply a modifier only because two code descriptions read differently or because the claim needs to get paid.

Medicare Coverage, Prior Authorization, and Frequency Rules

Coverage rules for CPT 93922 are not identical across Original Medicare, Medicare Advantage, Medicaid, and commercial plans. Confirm the applicable LCD or payer policy, the diagnosis requirements, prior authorization rules, frequency limits, and place-of-service conditions before the study happens, not after the claim gets denied.

Original Medicare Coverage Is Jurisdiction-Specific

CMS publishes national rules and manuals, and Medicare Administrative Contractors publish local coverage determinations and billing articles on top of those. A provider has to know which MAC covers the place of service, and the policy in effect on the date of service is the one that controls. A diagnosis code that works in one jurisdiction will not necessarily produce the same result in another. CMS Article A57593 treats ABI-only assessment as part of the physical exam under that policy, confirms preventive or screening services are not covered unless a statute provides for them, and requires medical necessity for each reported study. CMS Article A57593

Do Not Publish a Universal Frequency Limit

This corrects a common error in vascular billing content. There is no universal “once every 90 days” rule that applies to every payer. Frequency policy differs by MAC and by plan. One current WPS article generally expects noninvasive vascular studies not to repeat more than once a year outside specified inpatient and emergency settings, but that expectation belongs to that article and should not get generalized to every insurer. Repeat testing can still be justified with documentation of a change in condition, a treatment response, or a post-operative concern, and commercial or Medicare Advantage plans may run entirely different limits.

Prior Authorization Is Plan-Specific

The front-end team should verify eligibility, active coverage, network status, whether prior authorization applies, referral requirements, whether the diagnosis is covered, any site-of-service restriction, the frequency limit, patient cost sharing, and whether the authorized code matches the service performed. Not every Medicare Advantage plan requires authorization for this study, so check the specific plan rather than assuming.

ABN and Patient Financial Communication

When Original Medicare coverage is uncertain, follow the current CMS Advance Beneficiary Notice requirements where they apply. Do not default to modifier GY or any other coverage-related modifier without verifying the exact reason against current CMS requirements first.

A technically correct study can still turn into an avoidable denial when authorization, benefits, or frequency rules get missed at the front desk. prior authorization services built to verify payer requirements before the date of service exist for exactly this gap.

CPT 93922 Reimbursement in 2026

Medicare reimbursement is not one fixed national amount. Payment varies by locality, facility or non-facility setting, professional or technical component, the year’s conversion factor, geographic adjustment, and the specific payer contract in play. Verify the current amount through the CMS Physician Fee Schedule and the practice’s own contract terms rather than a number quoted somewhere else.

How to Verify Medicare Payment

1. Open the CMS Physician Fee Schedule lookup.
2. Select the correct calendar year.
3. Enter the procedure code.
4. Select the relevant locality.
5. Review both facility and non-facility amounts.
6. Review global, professional, and technical components separately.
7. Confirm status and payment indicators.
8. Record the date the amount was checked.

The CMS fee schedule search tool is the correct official destination for current Medicare payment verification. CMS Physician Fee Schedule lookup

Why Published National Averages Can Mislead

National figures often skip locality adjustments. Vendor guides sometimes reference the wrong year. Facility and non-facility values differ from each other. Global, TC, and 26 payments are not interchangeable. Commercial allowed amounts are contract-specific and will not match a Medicare-based estimate. A published fee, on top of all that, does not guarantee coverage or payment. Medical necessity, authorization, timely filing, edits, and documentation still decide whether the claim gets paid at that rate.

Commercial Payer Contract Review

Compare the contracted rate, the Medicare-based multiplier the payer uses, any site-of-service policy, multiple-procedure reduction rules, component billing rules, authorization requirements, appeal rights, and the practice’s own underpayment threshold. A rate that looked competitive at contract signing can drift once multiple-procedure reductions and site-of-service policies get applied in practice.

Payment verification only addresses the expected allowed amount. The next question is why an otherwise valid vascular-study claim still gets denied or underpaid.

Common Denials and One O Seven RCM’s Corrective Workflow

Most Common Denial Categories

Diagnoses, modifiers, and documentation should never change for the sole purpose of getting a claim paid. Every correction here starts from what the record already supports.

Correction vs Appeal

A corrected claim fits when the original submission has a fixable administrative or coding error and the record already supports the fix: a wrong modifier, an incorrect unit, a typo in the diagnosis, the wrong place of service, a missing authorization number, or a code selected incorrectly despite a complete supporting report.

An appeal fits when the payer denied a correctly submitted service and the practice has evidence to support coverage or medical necessity. That evidence usually includes the order, the clinical note, the test report, the permanent output, the current payer policy, the authorization, prior claim history, a medical-necessity explanation, and the code-edit rationale.

Root-Cause Prevention Loop

1. Categorize the denial.
2. Identify the payer-specific rule behind it.
3. Compare the rule against the record.
4. Decide between correction, reconsideration, or appeal.
5. Submit inside the required deadline.
6. Track the payer’s response.
7. Escalate when the situation calls for it.
8. Feed the root cause back into the front-end, documentation, coding, and claim-edit workflow.
9. Watch whether the same denial recurs.
10. Report the financial impact by payer and by cause.

Recurring medical-necessity, authorization, coding, and modifier failures call for structured denial management services instead of resubmitting the same claim without ever finding the root cause. Claims that stay unpaid after correction or appeal need to move into payer-specific AR follow-up services before the appeal and timely-filing windows close. A complete revenue cycle management workflow ties pre-service verification, documentation, coding, submission, denial prevention, payment posting, and follow-up into one accountable process instead of five disconnected vendors.

Recurring vascular-study denials are usually workflow data, not a string of unrelated bad luck. One O Seven RCM can review the denial pattern, identify the payer-specific cause, and correct the process before more claims stack up in AR.

Provider FAQs and Final Takeaways

What is the 93922 CPT code used for?

The 93922 CPT code reports a limited, bilateral, noninvasive physiologic study of the upper- or lower-extremity arteries, generally at one or two levels. Most studies combine an ABI with a qualifying physiologic method, such as waveform recording or plethysmography. It is not a stand-in for the full procedure descriptor, which the current AMA CPT source should always confirm.

What is the CPT code for ABI testing?

The code depends on what was performed. A simple ABI taken during an exam may not be separately reportable at all. Limited physiologic testing at one or two levels, multilevel testing, and standardized exercise testing each map to a different code, so the protocol decides the answer before the diagnosis does.

Is an ABI alone separately billable?

An ABI performed alone may be treated as part of the physical exam under applicable Medicare policy rather than a distinct diagnostic service. Separate reporting needs the complete physiologic study: a permanent record, an interpretation, documented medical necessity, and a payer policy that supports it.

Is the service bilateral?

Yes, CPT 93922 is bilateral by definition. Modifier 50 is not routinely added to show both sides were tested, since the descriptor already builds bilateral testing into the code. Unusual claim circumstances still deserve a quick check against the specific payer’s instructions.

What modifier is used for unilateral testing?

Modifier 52 may fit a reduced service when only one side was tested or the full study could not be completed, but confirm current payer instructions first and document why the complete bilateral study did not happen. Modifier 52 is not automatically required in every unilateral case.

Can physiologic and duplex studies be billed together?

Sometimes, but only when the code pair, the payer edit, independent medical necessity, and the documentation all support two clearly separate services. Modifier 59 is not an automatic override, and a payer can still deny the pair if the record does not show two distinct studies.

Does Medicare cover the test for screening?

Clinical screening recommendations and Medicare payment rules are separate questions. A current WPS article states that preventive or screening services are not covered unless a statute provides for them. Check the applicable MAC policy before assuming a screening indication will pay.

How much does Medicare reimburse for CPT 93922?

There is no single universal amount. Verify the year, the locality, facility versus non-facility status, and the specific component through the CMS Physician Fee Schedule lookup before quoting a number to anyone, including the provider ordering the test.

Final Takeaways

1. Match the code to the test that was performed.
2. Do not assume a simple ABI is separately billable on its own.
3. Align the diagnosis with the clinical record and the payer’s policy.
4. Verify modifiers, units, authorization, frequency, and edits before the claim goes out.
5. Treat recurring denials as workflow data, not a series of unrelated payer decisions.