CPT Code 93922: Billing, reimbursement, and documentation

Key takeaways

CPT Code 93922 covers a limited bilateral noninvasive physiologic study of upper or lower extremity arteries, using Doppler or plethysmography at one or two levels.

The level count separates it from CPT 93923, which needs three or more levels. Upcoding to 93923 without those levels is a top audit trigger.

Documentation must include a physician order, clinical indication, Doppler waveform interpretation, ABI values with the calculation method, and segmental pressure measurements.

Medicare pays about $83.17 for 93922 in 2026 and about $133.60 for 93923, so one extra documented level is worth roughly $50 a study.

Practice management software like Pabau links clinical notes directly to billing codes, so a 93922 claim leaves with its documentation attached.

CPT Code 93922 covers a limited bilateral noninvasive physiologic study of upper or lower extremity arteries. It applies when the study documents one or two pressure levels. Measure three or more levels and 93923 becomes the correct code.

The American Medical Association’s CPT code set carries the official descriptor. It reads: Limited bilateral noninvasive physiologic studies of upper or lower extremity arteries, using Doppler ultrasound and/or digital plethysmography; includes 1-2 levels. The code set names evaluation of peripheral vascular disease as the example indication.

In plain terms, the study captures Doppler waveform analysis, segmental blood pressure at one or two anatomical levels, and an ankle-brachial index (ABI) calculation. Vascular surgeons, cardiologists, podiatrists, and interventional radiologists are the primary billers.

What the procedure involves

• Doppler waveform analysis: continuous-wave or duplex Doppler captures arterial flow patterns at each level
• Segmental blood pressure: cuff measurements at thigh, calf, or ankle (1-2 levels for 93922)
• ABI calculation: ankle systolic pressure divided by brachial systolic pressure, with values below 0.9 indicating peripheral arterial disease (PAD)
• Upper or lower extremity: 93922 covers either limb region, so name the extremity in the documentation

Clinical indications and medical necessity

Medicare coverage criteria for non-invasive peripheral arterial vascular studies sit in LCD L35761. Meeting medical necessity takes documented clinical evidence, not a suspicion noted in the chart. Before billing CPT 93922, confirm the record supports one of the covered indications below.

Coverage is contractor-specific, so the version your Medicare Administrative Contractor (MAC) publishes is the one that governs your claims. Commercial payers often mirror L35761 and then add their own prior-authorization or frequency rules. Check the patient’s plan before the study rather than after the denial.

Medicare reimbursement for CPT Code 93922

The CMS Physician Fee Schedule lookup tool is the authoritative source for 2026 payment rates. Rates vary by geographic practice cost index (GPCI) locality, so the figures below are national averages. Verify the rate for your MAC jurisdiction before you submit.

For a locality check, the FastRVU 2026 RVU lookup tool applies your MAC’s GPCI to the same RVUs. In a hospital outpatient setting the physician bills only the professional component, so the payment is a fraction of the office rate. Pull that professional-component figure for your own locality instead of working from a national average.

Pabau connects to the Claim.MD clearinghouse, which submits 93922 claims electronically to thousands of US payers. The integration covers real-time eligibility checks, 837P claim submission, and 835 remittance receipt.

That closes the reimbursement loop from claim creation to payment posting. Claim status and remittance data land in the same system that holds your study notes, so an underpaid 93922 is easy to spot.

ICD-10 codes used with CPT Code 93922

Every claim for CPT 93922 needs an ICD-10-CM diagnosis code that establishes medical necessity under LCD L35761. The diagnosis must match the documented clinical reason for the study. Never code a suspected condition as confirmed.

Code specificity matters. Using I73.9 when the record supports I70.219 can trigger a medical necessity review, so code to the highest level of specificity the documentation carries. The ICD-10-CM code index is the place to confirm whether a more specific diagnosis code exists.

CPT 93922 vs 93923: Key differences

The level count is the whole distinction, and it carries a price. Billing 93923 when only two pressure levels are documented is upcoding. Billing 93922 after measuring three or more levels underpays the practice by about $50 a study.

A practical tip: document the number of pressure cuff levels explicitly in the study report. “Two-level segmental pressure study at the ankle and below-knee cuff positions” removes the ambiguity that invites a post-payment audit. No coder should have to infer the level count from an incomplete report.

Related vascular CPT codes

CPT 93922 belongs to the non-invasive extremity arterial study family. Choosing the right code means knowing where 93922 ends and its siblings begin.

A common confusion: 93922 uses Doppler waveform or plethysmography with segmental pressures. The 93925 and 93926 family uses duplex imaging, which combines real-time B-mode with spectral analysis.

These are distinct technologies, so billing 93922 for a duplex scan is a coding error. The AAPC CPT code lookup helps when you are separating these two families.

Modifiers applicable to CPT 93922

Modifier selection for CPT 93922 depends on where the service happens and who bills each component. The global service indicator for 93922 is “Global”, meaning the physician performs and interprets the study, so both components are bundled by default.

Place-of-service note: In a hospital outpatient setting, the physician typically bills 93922-26 and the hospital bills 93922-TC. In an office where the physician owns the equipment, no modifier is needed. Appending modifier 26 there reduces reimbursement for no reason and may prompt a payer inquiry. Check your MAC’s billing guidance if your practice works across both settings.

Documentation requirements for CPT 93922

Documentation failures are the main cause of CPT 93922 recoupment in post-payment audits. A claim can pay on submission and still be taken back later. When a MAC opens a probe audit on vascular studies, an incomplete report means repaying the money.

Every 93922 claim should be backed by a study report carrying all of the elements below. A clean claim starts with a complete clinical record, well before the submission reaches the clearinghouse.

• Physician order: a signed order documenting the clinical indication and requesting the study
• Clinical indication: documented symptoms or diagnosis justifying the study, such as claudication at 200 meters or a non-healing right plantar ulcer
• Equipment used: continuous-wave Doppler or duplex ultrasound identified by type, plus plethysmography if it was used
• Number of levels measured: the anatomical cuff positions stated explicitly, for example ankle and high thigh bilaterally, two levels
• Doppler waveform interpretation: waveform quality at each level, described as triphasic, biphasic, or monophasic, with bilateral comparison
• ABI values: numerical values for each ankle, the brachial reference pressure used, and the calculated ratio
• Segmental pressure measurements: numeric values at each cuff level, bilateral
• Interpreting physician signature: attestation of the interpretation, with credentials and date
• Accreditation status: IAC Vascular Testing accreditation, where the payer requires it, so verify this per plan before submitting

Missing ABI values are the most-cited deficiency in 93922 audits. A waveform description without the numeric ABI ratio leaves the record incomplete under CMS guidance. If your technologist captures the values but the interpreting report omits them, the claim is vulnerable.

Equipment and technical requirements

The equipment used determines which code family applies. CPT 93922 covers physiologic testing technology, not duplex imaging.

• Continuous-wave (CW) Doppler: a non-imaging Doppler probe that assesses arterial flow signals and captures waveforms at each level
• Digital plethysmography: used instead of or alongside Doppler, capturing volume changes in digits or limb segments
• Segmental blood pressure cuffs: standard cuffs at thigh, above-knee, below-knee, and ankle positions, with 93922 covering 1-2 of those locations
• Tracing printout: the Doppler or plethysmography tracing should stay in the medical record as supporting documentation
• Accreditation: IAC Vascular Testing accreditation is increasingly required by commercial payers, so confirm it with each payer individually

Duplex ultrasound adds B-mode imaging to spectral Doppler, which puts it in the 93925 and 93926 family. If your lab performs duplex scans and bills 93922, that is a systematic coding error, and a focused review will surface it.

How Pabau links 93922 documentation to the claim

Vascular study billing leaves little room for a missing field. One absent ABI value can turn a payable claim into a denial. When the study report lives in one system and the claim is built in another, the level count and the ABI values get retyped. Retyping is where they go missing.

Pabau’s claims software for specialists links structured clinical notes to billing codes. The ABI values, segmental pressure levels, and Doppler waveform descriptions captured during the study flow into the claim record.

Before submission, the system flags any required documentation field left empty, which catches the missing-ABI problem before the payer sees it.

Claims then route through the Claim.MD integration, which validates the CPT and ICD-10 pairing against payer edits before transmission. Anything that fails those edits comes back with a specific CARC reason code. A 93922 denial arrives with its reason attached instead of as a mystery to chase.

Reduce CPT 93922 denials with connected billing workflows

Pabau links clinical documentation to billing codes automatically, flags missing fields before submission, and routes claims through Claim.MD to thousands of US payers. See how it works for vascular and cardiology practices.

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Conclusion

One number decides this code. Document the pressure levels explicitly, match them to 93922 or 93923, and put the ABI ratio in every report. Do those three things consistently and the denial pattern on vascular studies largely disappears.

Accuracy runs in both directions here. Downcoding to feel safe costs about $50 a study, and upcoding invites a probe audit that costs far more. The level count written in the report is what protects you either way.

Pabau’s claims management software connects study notes to the claim and routes submissions through Claim.MD to thousands of US payers. Book a demo to see how it handles vascular study billing from note to payment.

Continue your research

Want to understand how clearinghouse submissions work for vascular codes? Medical billing fundamentals covers the full claim lifecycle from patient encounter to payment posting.

Tracking down why a 93922 claim was underpaid? Electronic remittance advice explains how to read 835 files and separate contractual adjustments from non-covered ones.

Need to tighten up your denial workflow before the next MAC audit? Denial codes in medical billing breaks down the most common CARC codes and how to respond to each one.

Submitting your vascular studies electronically? The 837 file explains what the 837P transaction carries and how a payer reads it.

Expecting a probe audit on your vascular volume? Medical billing compliance sets out the documentation standards auditors apply and how to hold them.

Frequently asked questions