Summary & Overview

CPT 15999: Pressure Ulcer Excision, Unlisted Procedure

CPT code 15999 denotes an unlisted surgical procedure used to bill for pressure ulcer excision when no specific code applies. As an unlisted CPT code, 15999 serves as a catch‑all for variable, provider‑directed excisions of pressure ulcers that differ in size, depth, reconstructive needs, or intraoperative technique, making standardized coding impractical. Nationally, use of unlisted codes can affect payment clarity, prior authorization workflows, and claims adjudication because payers often require operative notes, size measurements, and comparator codes to determine coverage and reimbursement.

Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on the clinical context for pressure ulcer excision, the implications of using an unlisted CPT code for billing and documentation, and the typical information payers request to process claims. The publication summarizes common modifiers associated with surgical services and explains where 15999 is likely to appear in service lines and sites of care. It also outlines what to expect in payer review and documentation requirements to support medical necessity when a specific CPT code is unavailable. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare15999CPTpressure ulcer excisionunlisted proceduresurgical codingwound careambulatory surgeryhospital outpatient

Billing Code Overview

CPT code 15999 is an unlisted procedure code used to report excision of pressure ulcers when no specific CPT code exists for the procedure performed. The code captures services involving surgical removal of pressure ulcer tissue that vary in complexity or technique and therefore are not described by a dedicated CPT code.

Service type: Surgical — wound/pressure ulcer excision

Typical site of service: Hospital outpatient department or ambulatory surgical center

Clinical & Coding Specifications

Clinical Context

A typical patient is an older adult with a chronic Stage III/IV pressure ulcer over the sacrum or heel failing conservative wound care. The patient may be admitted from a long-term care facility for surgical management after weeks to months of debridement, offloading, and topical therapy without durable closure. Preoperative evaluation includes wound assessment, optimization of nutrition and glycemic control, and identification of infection with wound cultures. In the operating room under general or regional anesthesia, the surgeon excises nonviable tissue and performs wide excision of the ulcer bed and surrounding scar, and then closes the defect by primary closure, local flap, or delayed reconstruction as clinically indicated. Intraoperative services may include irrigation, hemostasis, and placement of drains. Postoperative care includes wound monitoring, dressing changes, possible negative-pressure wound therapy, and follow-up visits for staple or suture removal and assessment of healing.

Typical site of service: hospital operating room, ambulatory surgery center, or inpatient surgical suite.

Service type: surgical excision of pressure ulcer tissue when no specific CPT code describes the exact procedure; report with 15999 as an unlisted procedure code for the integumentary system.

Coding Specifications

Modifier	Description	When to Use
`22`

Taxonomy Code	Specialty	Notes
207X00000X	General Surgery	Commonly performs excision and reconstruction for pressure ulcers.
207L00000X	Plastic Surgery	Performs complex soft-tissue reconstruction, local or rotational flaps after excision.
207R00000X	Colon & Rectal Surgery	Manages sacral and perianal pressure ulcers with associated anorectal pathology.
207V00000X	Orthopedic Surgery	May be involved when pressure ulcers are associated with bony debridement or exposed bone.
363A00000X	Wound Care/Hyperbaric Medicine	Specialists who manage preoperative optimization and postoperative wound therapy.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`L89.153`	Pressure ulcer of sacral region, stage 3	Sacral pressure ulcers requiring excision and reconstruction are commonly treated with unlisted excision code when no specific CPT exists for the precise procedure.
`L89.154`	Pressure ulcer of sacral region, stage 4	Deep ulcers with exposure of muscle or bone often require extensive excision and flap coverage; `15999` may be used when procedure details do not map to a specific code.
`L89.623`	Pressure ulcer of right buttock, stage 3	Location-specific ulcers on gluteal/buttock areas may need tailored excision and closure techniques.
`L89.624`	Pressure ulcer of left buttock, stage 4	Severe buttock ulcers often necessitate wide excision with possible muscle or fasciocutaneous flap reconstruction.
`L89.313`	Pressure ulcer of right trochanter, stage 3	Trochanteric ulcers can require excision and rotational flap coverage due to proximity to bone and soft-tissue loss.
`L89.314`	Pressure ulcer of left trochanter, stage 4	Advanced trochanteric ulcers with sinus tracts or osteomyelitis may need surgical excision and complex reconstruction.
`M86.17`	Osteomyelitis of other specified site, chronic	Chronic bone infection adjacent to a pressure ulcer may necessitate excision of infected bone and soft tissue as part of the procedure.
`T81.0XXA`	Infection following a procedure, initial encounter	Used when postoperative infection occurs related to a prior pressure-ulcer procedure; may necessitate return to OR for additional excision or management.

CPT Code	Description	Relationship to This Procedure
`11042`	Debridement, muscle and/or fascia (first 20 sq cm or less)	Useful for initial surgical debridement when deeper necrotic tissue is removed prior to definitive excision and closure; may be reported for layered debridement portion when appropriately documented.
`11043`	Debridement, muscle and/or fascia (each additional 20 sq cm)	Use in conjunction with `11042` when larger areas of deep debridement are performed during ulcer excision.
`12032`	Repair, intermediate, wounds of scalp, arms, and/or legs; 2.5 cm to 7.5 cm	May apply when closure of the excision defect is performed by layered intermediate repair that fits description and location.
`15271`	Application of pedicled or free flap for trunk or perineum (first 100 sq cm)	Report when definitive reconstruction after pressure ulcer excision requires pedicled flap coverage; used when a specific flap code exists and flap meets code definition.
`97607`	Negative pressure wound therapy (NPWT), topical application	Often used postoperatively to manage complex wounds and promote granulation after partial closure or grafting; may be performed in clinic or hospital setting.

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