CPT Code 01654: Anesthesia for shoulder and axilla artery bypass graft

Key Takeaways

CPT Code 01654 covers anesthesia for a bypass graft procedure on the arteries of the shoulder and axilla, classified within the 01610-01680 range for anesthesia on the shoulder and axilla.

CPT 01654 carries 8 base units and has no connection to cardiac or cardiopulmonary bypass surgery, despite the similar-sounding “bypass” terminology.

Reimbursement is calculated using the formula: (Base Units + Time Units + Qualifying Circumstance Units) multiplied by the anesthesia conversion factor.

Modifiers AA, QZ, QK, and QX are required on every 01654 claim to identify whether an anesthesiologist or CRNA performed the service.

Pabau’s claims management software helps anesthesia practices capture documentation, track time units, and submit clean claims with the correct modifiers.

CPT Code 01654 is the anesthesia code for a bypass graft procedure on the arteries of the shoulder and axilla, carrying 8 base units under the ASA Relative Value Guide.

It sits in a code range covering several closely related shoulder and axilla artery procedures, so it is easy to confuse with a neighboring code such as 01656.

The code applies exclusively to US-based anesthesia providers billing under Medicare, Medicaid, and commercial payer fee schedules where CPT coding standards govern reimbursement.

CPT Code 01654: Definition and clinical scope

CPT Code 01654 is the American Medical Association’s designated code for anesthesia services provided during a bypass graft procedure on the arteries of the shoulder and axilla. The official AMA descriptor reads: Anesthesia for procedures on arteries of shoulder and axilla; bypass graft.

This places 01654 in the peripheral vascular anesthesia category, alongside other codes describing surgery on the axillary and brachial arteries.

Despite the similar-sounding term “bypass,” 01654 has no connection to cardiac surgery or cardiopulmonary bypass (the heart-lung machine used in open-heart procedures) — the bypass graft here is a vascular conduit that reroutes blood flow around a diseased or blocked segment of the shoulder/axilla arterial system.

The “bypass graft” qualifier is the key clinical distinction that separates 01654 from its neighboring codes. Bill 01654 when a surgeon creates a bypass graft confined to the shoulder and axilla arteries.

When the bypass graft runs specifically from the axillary artery to the femoral artery, use 01656 instead, not 01654. Billers should confirm the exact vessels involved and the graft configuration with the operative report before assigning a code from this series.

CPT 01654 base units and how anesthesia reimbursement is calculated

Anesthesia billing does not use a single flat fee. Every claim is calculated using a unit-based formula governed by the CMS Physician Fee Schedule and the ASA Relative Value Guide (RVG).

For CPT Code 01654, the base unit value published in the ASA RVG is 8 base units, reflecting the moderate complexity of a peripheral vascular bypass graft procedure on the shoulder and axilla arteries.

The anesthesia billing formula

Total reimbursement is calculated as follows:

1. Base Units: The fixed complexity value assigned to the code by the ASA RVG (8 for CPT 01654)
2. Time Units: One unit per 15 minutes of anesthesia time, per CMS Medicare Claims Processing Manual, Chapter 12. Some commercial payers use different increments. Always verify with the payer.
3. Qualifying Circumstance Units: Add-on units from codes 99100, 99116, 99135, or 99140 when applicable (see below)
4. Anesthesia Conversion Factor (ACF): A dollar-per-unit rate set annually by CMS. The 2026 Medicare national anesthesia conversion factor should be verified from the CMS MPFS final rule, as it changes each year and varies by locality

Formula: (Base Units + Time Units + Qualifying Circumstance Units) x Conversion Factor = Reimbursement

For example: a 3-hour procedure (12 time units) with no qualifying circumstances would yield 20 total units (8 base + 12 time). Multiply by the current conversion factor for the locality to determine the Medicare allowable. Practices should use the FastRVU 2026 lookup tool to verify current locality-specific rates.

Qualifying circumstances for CPT 01654 claims

Shoulder and axilla bypass graft procedures can trigger 99100 for elderly patients or 99140 for emergent presentations, such as acute limb ischemia. Document the clinical basis for any qualifying circumstance code in the anesthesia record before billing it.

2026 Medicare fee schedule and reimbursement rates for CPT Code 01654

Medicare reimbursement for CPT Code 01654 is not a single national figure. Because the anesthesia conversion factor varies by Medicare locality, the actual allowable depends on where the service is rendered.

The 2026 national Medicare anesthesia conversion factor should be verified directly from the CMS Physician Fee Schedule lookup tool before billing, as it is updated with each annual MPFS final rule.

Commercial payers typically reimburse at a rate above Medicare, though contract terms vary significantly. Always confirm the contracted conversion factor with each payer before estimating reimbursement.

You can also cross-reference current figures using procedure code fee schedules to understand how fee structures are organized across different payer types.

Required modifiers for CPT Code 01654

Every CPT Code 01654 claim submitted to Medicare requires a provider-role modifier. Missing or incorrect modifiers are the single most common reason for anesthesia claim denials. The modifier identifies who performed the anesthesia service and in what capacity, directly affecting the payment rate.

The QK/QX pair is the most frequently misapplied modifier combination in peripheral vascular anesthesia billing. Both the anesthesiologist (QK) and the CRNA (QX) must bill separately using the same 01654 code with their respective modifiers. Failure to pair these correctly results in claim rejection.

Medical direction rules also require an anesthesiologist to perform specific pre-anesthesia and post-anesthesia tasks for each case they direct. Documenting compliance with these seven CMS medical direction requirements is essential for 01654 claims billed under QK.

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Documentation requirements for CPT Code 01654 claims

Peripheral vascular anesthesia claims like 01654 attract above-average scrutiny from MACs, particularly around vessel identification and graft configuration. Every 01654 claim must be supported by a complete anesthesia record that documents medical necessity and validates the units billed.

Incomplete documentation is the second most common cause of claim denial and the leading reason for post-payment audits in vascular anesthesia.

Required documentation includes all of the following. Missing any single element creates a recoverable denial or, worse, a compliance finding. Practices that maintain HIPAA-compliant documentation workflows and structured record templates reduce this risk considerably.

• Pre-anesthesia evaluation: Completed by the anesthesia provider, documenting patient history, physical status (ASA classification), and anesthesia plan. Must be dated and timed before the procedure.
• Intraoperative anesthesia record: Continuous time-stamped record of vital signs, anesthetic agents, dosages, and patient responses. The record establishes the start and stop times used to calculate time units.
• Start and stop times: Anesthesia time begins when the provider is in continuous attendance and ends when the patient is safely transferred to post-anesthesia care. Must be documented explicitly, not inferred.
• Post-anesthesia note: Evaluates the patient’s condition following emergence. Must document that the patient was seen and assessed in the recovery setting.
• Medical necessity statement: Identifies the surgical procedure performed and confirms it requires the level of anesthesia described by 01654.
• Qualifying circumstance documentation: If any add-on code (99100, 99116, 99135, 99140) is billed, the clinical basis must be explicitly recorded in the anesthesia record.

For surgical specialty practices — including those using plastic surgery EMR software — managing documentation across multiple providers and sites, structured digital intake forms and electronic anesthesia records reduce the risk of missing fields at time of claim submission.

Common billing errors and how to avoid them

Peripheral vascular anesthesia billing errors cluster around a predictable set of mistakes. Billers who know where 01654 claims typically fail can build pre-submission checks that catch most denials before they happen. This section covers the top denial patterns, none of which are covered in detail by competing code reference pages.

• Missing provider-role modifier: Submitting 01654 without AA, QZ, QK, or QX is an automatic denial. Verify the modifier is attached before every submission.
• Incorrect time unit rounding: CMS rounds time to the nearest 15-minute increment for Medicare. Some billers round up on every partial interval, which triggers overpayment flags. Use the actual documented start-to-stop time and apply the rounding rule precisely.
• Wrong place of service (POS) code: Shoulder and axilla bypass graft surgery almost always occurs in a hospital (POS 21) or outpatient hospital (POS 22). Submitting POS 11 (office) for an intraoperative service generates an automatic edit failure.
• Unbundling qualifying circumstances: Billing 99116 and 99135 together on the same claim is an unbundling error. These codes are mutually exclusive. Select the one that best describes the clinical circumstance.
• Missing pre-anesthesia evaluation: Many MACs audit for the presence of a pre-procedure evaluation as a condition of payment. If the evaluation was completed but not attached to the claim or chart, request a corrected claim rather than allowing the denial to stand.
• Pairing QK without QX: When an anesthesiologist medically directs a CRNA, both providers must bill their own claim. Submitting only the anesthesiologist’s QK claim without the CRNA’s QX claim leaves revenue uncollected and may raise questions about the medical direction documentation.

Patterns similar to these appear across many high-acuity anesthesia codes. Understanding I81 and other high-complexity diagnoses helps billers pair the correct diagnosis code with 01654, which reduces medical necessity denials.

Similarly, reviewing 00216 shows how add-on code rules and documentation requirements shift for intracranial vascular anesthesia procedures.

Related shoulder and axilla artery anesthesia CPT codes (01650-01656 range)

CPT Code 01654 sits within the shoulder and axilla anesthesia subsection covering arterial procedures. Selecting the correct code from this range requires understanding which vessels are involved and the exact graft configuration. The table below maps the most commonly confused adjacent codes.

The 01654 vs. 01656 distinction is where most coders make errors. Use 01654 for a bypass graft procedure confined to the shoulder and axilla arteries. Use 01656 specifically when the bypass graft runs from the axillary artery to the femoral artery — a longer, anatomically distinct conduit that also carries a different base unit value (10 vs. 8).

Confirm the exact vessels grafted in the operative report before assigning either code. For another anesthesia code with a similar site-specific distinction, see how documentation compares for 00218.

How Pabau supports anesthesia billing and documentation

Anesthesia billing for high-acuity codes like CPT Code 01654 depends on complete, timestamped records that survive payer scrutiny. Most denials trace back to missing documentation rather than incorrect coding.

Pabau’s claims management software gives anesthesia practices a structured workflow for capturing pre-anesthesia evaluations, recording start and stop times, and attaching modifiers before submission.

The platform’s automated billing workflows can flag claims missing required modifiers and route incomplete records back to the clinical team before submission.

This reduces the manual review burden on billing staff handling large volumes of peripheral vascular anesthesia cases, including practices coordinating post-op rehab through physical therapy EMR software.

Practices dealing with the diagnostic coding side, such as pairing the correct ICD-10 diagnosis with 01654, can also reference Pabau’s diagnostic coding guides to understand how diagnosis and procedure code pairing affects medical necessity reviews.

Review how I76 and similar condition-specific codes work alongside procedure codes for a fuller picture of clean claim submission.

Conclusion

CPT Code 01654 is a moderate-complexity, high-scrutiny anesthesia code where billing errors are expensive. The most preventable denial causes — missing modifiers, incorrect time unit rounding, and absent pre-anesthesia evaluations — all stem from documentation gaps rather than coding confusion.

Getting the code selection right matters just as much: confirming the correct base unit value (8, not a neighboring code’s 6 or 10) and the exact vessels grafted prevents both underbilling and audit risk.

Pabau’s claims management tools help anesthesia practices capture the documentation required for 01654 clean claim submission. To see how Pabau handles complex anesthesia billing workflows, book a demo with the team.

Continue your research

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Billing for a vascular procedure instead of a bypass graft? CPT code 36471 breaks down reimbursement and modifiers for varicose vein sclerotherapy.

Need anesthesia coding for an orthopedic procedure? CPT code 01340 explains base units and billing requirements for anesthesia during closed distal femur procedures.

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