Debridement Coding Audits: Depth, Documentation, and CPT 11042-11047

A debridement coding audit tests whether the depth billed under CPT 11042-11047 matches the depth documented in the medical record. Medicare Administrative Contractors and Recovery Audit Contractors can request the records behind a claim and check whether they support the code billed. For a wound care provider, the exposure runs from a claim-level recoupment demand to a False Claims Act lawsuit. The stakes are not theoretical: in November 2025, the Justice Department announced that a national wound care physician group and its owner agreed to pay $45 million to resolve allegations that surgical excisional debridement was billed for visits where only routine, non-surgical wound care had occurred.

Selective vs Excisional Debridement Coding

CMS's 2011 physician fee schedule final rule says services previously reported with CPT 11040 and 11041 are reported, beginning in 2011, with CPT 97597 and 97598, the selective debridement codes. CPT 11042 through 11047 cover surgical debridement, coded by the deepest tissue removed, with an add-on code for additional area: subcutaneous tissue (11042/11045), muscle and/or fascia (11043/11046), or bone (11044/11047). Wellpoint Federal's billing and coding article on debridement services adds that the code must represent the level of debridement, not the depth of the ulcer. The distinction turns on documentation, not the instrument: Novitas Solutions' Wound Care LCD lists scissors, scalpel and curettes for selective debridement too, and says surgical debridement occurs only if material has been excised. Its billing article excludes washing debris from feet and paring corns or calluses from CPT 11042-11047.

The Depth Documentation Standard

The level of tissue debrided, not the depth or grade of the ulcer, sets the CPT code level. Auditors apply LCDs and MAC articles when deciding whether a service is correctly coded. Novitas Solutions' Wound Care LCD requires current wound volume (surface dimensions and depth) and procedure notes showing the tissue removed (skin, full or partial thickness; subcutaneous tissue; muscle and/or bone), the method used to debride, the instruments used, and the wound's character before and after debridement, as set out in the LCD. A note that states only "excisional debridement performed," without describing the tissue removed and the depth reached, fails that standard even when the CPT code selected was correct. Novitas's LCD recommends photographic documentation of the wound at the start of treatment and immediately before or after debridement.

The CPT code level for a debridement claim rises or falls on one fact: the depth of tissue the documentation proves was actually removed.

Upcoding Theories Auditors Run

Medicare contractor policy and recent enforcement point to three theories. The first is depth inflation: billing a deeper code than the tissue removed supports. Novitas's billing article says removing only biofilm from the surface of a muscular ulceration supports CPT 97597-97598, and that CPT 11044 cannot be billed for exposed bone that was not removed. The second is frequency without medical necessity: repeating surgical debridement without documented evidence of clear benefit. For chronic wounds treated in an outpatient setting, Wellpoint Federal's billing article says services beyond the fifth surgical debridement coded 11043, 11044, 11046 or 11047, per patient, per year, per wound, may require medical review. The third is systemic code defaulting, illustrated by the government's case against Vohra Wound Physicians Management LLC and its owner, which alleged that the company programmed its electronic health record and billing software to always bill Medicare for the higher-reimbursed surgical excisional procedure and to create false medical record documentation to support the scheme. The allegations were resolved in a $45 million False Claims Act settlement announced in November 2025, with no determination of liability.

Why Early Legal Counsel Is Critical

It is critical that wound care providers promptly retain experienced healthcare defense counsel upon receiving a subpoena, audit notice, investigative request, or other government inquiry concerning debridement coding. Early legal intervention can protect the provider's rights, guide responses to government requests, avoid inadvertent admissions, preserve relevant defenses, and allow counsel to communicate with investigators on the provider's behalf. Delaying legal representation can significantly affect the outcome of a matter and expose the provider to unnecessary risk.

How Health Law Alliance Can Help

Health Law Alliance defends wound care providers facing debridement coding audits as part of our broader wound care audit defense practice, from the initial documentation request through appeal and, where a matter escalates, False Claims Act exposure. We review the underlying charts against CPT and Medicare Administrative Contractor documentation standards, challenge extrapolated recoupment demands, and represent providers in dealings with Medicare Administrative Contractors, Recovery Auditors, and the Department of Justice. If your practice has received a debridement coding audit notice, contact us today for a free consultation to discuss your defense.