Modifier 54: Surgical Care Only (Intraoperative Service)

Definition

Modifier 54 is used when a surgeon performs only the intraoperative (surgical) portion of a procedure that has a global surgical package including pre-operative, intraoperative, and post-operative care. The surgeon does not perform pre- or post-operative evaluation/management. Another provider typically handles pre-op and post-op phases. Modifier 54 indicates the surgeon is responsible only for the surgery itself.

When to Use

Surgeon performs knee arthroscopy (29881-54); primary care physician provides pre-op clearance and post-op follow-up
Visiting surgeon performs cataract surgery (66984-54); local ophthalmologist manages pre-op and post-op care
Surgeon performs total hip replacement (27130-54); patient returns to primary surgeon for post-op care
Locum surgeon performs appendectomy (44960-54); hospital-based surgeon manages pre- and post-operative

Documentation Requirements

Clarify in operative note and billing that only intraoperative service is being billed. Ensure other provider(s) document pre-op and post-op care separately. Do not duplicate care between surgeons. Clearly define transition points: when other surgeon takes over pre-op and when post-op begins. Ensure no overlap in responsibility. Operative report should suffice for 54; no separate post-op notes from operating surgeon.

Payer-Specific Rules

Payer	Acceptance	Common Denials	Notes
Medicare	Accepted; split global fee	CO-20: Charge exceeds fee schedule	Pay only intraoperative RVU portion (typically 45-50% of global). Require documentation.
Aetna	Accepted; coordinate with other providers	CO-4: Service bundled	Will pay reduced intraoperative amount. Require other provider documentation.
United Healthcare	Accepted; requires coordination	CO-56: Inaccurate/incomplete information	Pay surgical portion. Deny if pre/post-op also billed from same surgeon.
Cigna	Accepted with coordination	CO-20: Charge exceeds fee schedule	Will pay surgical portion. Require evidence other provider manages pre/post-op.
Humana	Accepted; standard split	CO-54: Surgical care included in another	Pay intraoperative RVU only. Deny if overlap with other provider billing.

Related Modifiers

55 – Post-operative care only. Use if provider performs only post-operative phase.
56 – Pre-operative care only. Use if provider performs only pre-operative evaluation.
80 – Assistant surgeon. Use if assistant surgeon assists with operative portion.

Common Denials

CARC Code	Reason	Primary Cause
CO-20	Charge exceeds fee schedule	Billed full global fee; must bill reduced surgical-only fee.
CO-4	Service bundled	Another provider already billed same procedure code; cannot also bill 54.
CO-56	Incomplete information	Cannot determine who performed pre- and post-operative care.

FAQ

Can the same surgeon bill 54 and 55?

No. One surgeon should perform the complete global package or split it with other provider(s). Same surgeon cannot split own care.

What RVU percentage do I get for modifier 54?

Medicare typically 45-50% of global RVU (intraoperative portion). Varies by code and payer.

Does the other provider bill the pre- and post-op separately?

Yes. If surgeon A bills 54 (intraop), surgeon B should bill 56 (pre-op) and 55 (post-op), or other appropriate split.

Prevent These Denials

Prevent surgical care split billing errors. Use a co-pilot to coordinate provider documentation.

Related Resources

This reference is current as of 2026-03-23. Payer policies change. Always verify against the payer's latest policy documentation.

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