CPT 15956Surgery

Exc trchntr pr ulc prep flap

CPT 15956 covers surgical removal of a pressure ulcer (bedsore) on the hip bone area (trochanter) and closing the wound with a tissue flap taken from nearby healthy tissue. This is a complex reconstructive procedure performed when the pressure ulcer extends deep into tissue layers.

Showing rates for

National Average

Base Medicare rate

$1,139.89

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

16.79

PE RVU (NF)

15.07

MP RVU

3.38

Total RVU

35.24

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Document specific pressure ulcer staging (III or IV) and exact anatomical location over the greater trochanter with measurements of ulcer dimensions (length, width, depth in cm)
Impact: Missing staging documentation is the #1 cause of denials; proper documentation supports the 35.24 RVU assignment and prevents downcoding to simpler debridement codes
Separately document and report the type of flap used (advancement, rotation, V-Y, tensor fascia lata) with detailed operative note describing flap elevation, transposition, and inset
Impact: Justifies the flap preparation component of 15956 versus simple excision; inadequate flap documentation may result in $400-600 payment reduction if downcoded to 11046
When excising heterotopic bone or underlying bursa during the same procedure, document these components but do not separately bill osteectomy codes (20150) as they are bundled
Impact: Prevents claim rejection for unbundling while ensuring medical necessity is clearly established; attempting to bill separately will trigger NCCI edits
For hospital billing, ensure procedure is coded to inpatient setting when appropriate; both facility and non-facility rates are identical at $1139.89 for CPT 15956
Impact: While rates are equal, proper setting designation affects DRG assignment and total hospital reimbursement; outpatient classification may reduce overall facility payment by 15-25%
Link appropriate ICD-10 codes specifying pressure ulcer site (L89.219-L89.229 series for trochanteric ulcers) with laterality and stage to support medical necessity
Impact: Incomplete diagnosis coding triggers medical necessity denials; proper linkage supports the high RVU value and complex nature of the procedure

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 15956 in 2025?

The 2025 Medicare national average reimbursement for CPT 15956 is $1139.89 for both facility and non-facility settings. This rate is based on 35.24 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary based on geographic location and MAC-specific adjustments.

What is the difference between CPT 15956 and simple pressure ulcer debridement codes?

CPT 15956 specifically includes excision of a trochanteric pressure ulcer with preparation for flap closure or primary closure using local tissue rearrangement, representing a complex reconstructive procedure. Simple debridement codes (11042-11047) cover only removal of non-viable tissue without flap construction. The 15956 code has significantly higher RVUs (35.24 vs 2-8 for debridement) reflecting the complexity of flap-based reconstruction.

Can CPT 15956 be billed bilaterally with modifier 50?

Yes, when trochanteric pressure ulcers on both hips are excised with flap closure during the same operative session, modifier 50 should be appended. Medicare typically reimburses bilateral procedures at 150% of the unilateral rate, though this is subject to payer-specific policies. Documentation must clearly support separate right and left procedures.

What diagnosis codes support medical necessity for CPT 15956?

Primary diagnosis codes include ICD-10 series L89.219-L89.229 for pressure ulcers of the right and left hip (trochanteric region) at various stages. Stage 3 (L89.213, L89.223) and stage 4 (L89.214, L89.224) ulcers most commonly support medical necessity for surgical excision with flap closure. Unstageable (L89.210, L89.220) may also be appropriate if eschar prevents staging.

How many RVUs is CPT code 15956 worth in 2025?

CPT 15956 has 35.24 total RVUs in 2025, broken down as follows: 16.79 work RVUs, 15.07 practice expense RVUs (both facility and non-facility), and 3.38 malpractice RVUs. This high RVU value reflects the complexity and time required for trochanteric ulcer excision with flap reconstruction.

What documentation is required to bill CPT 15956 without denial risk?

Essential documentation includes: pressure ulcer staging (typically stage III or IV), specific trochanteric location with laterality, three-dimensional measurements, evidence of failed conservative treatment, detailed operative note describing complete excision and flap construction (type, dimensions, elevation technique, transposition method), and appropriate ICD-10 linkage. Inadequate flap documentation is the most common reason for downcoding to debridement codes.

Can CPT 15956 be billed with skin graft codes on the same day?

Generally no, skin graft codes are bundled with 15956 when applied to the same trochanteric site, as the code descriptor includes preparation for flap OR graft closure. If a skin graft is applied to a completely separate anatomical site during the same session, it may be separately billable with modifier 59. However, billing both a flap closure (15956) and graft to the same trochanteric ulcer will result in bundling denials per NCCI edits.