CPT 15734Surgery

Muscle-skin graft trunk

CPT code 15734 describes a surgical procedure where a surgeon transfers healthy muscle and skin from one area of the trunk to repair damaged or missing tissue on another part of the trunk. This complex reconstruction helps restore both function and appearance after trauma, surgery, or disease.

Showing rates for

National Average

Base Medicare rate

$1,466.27

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

PE RVU (NF)

17.39

MP RVU

4.94

Total RVU

45.33

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

NCCI bundling edits

Loading bundling edits…

Billing tips

Document exact defect dimensions (length x width in cm) and specify the muscle(s) included in the flap (e.g., latissimus dorsi, pectoralis major, rectus abdominis) with detailed vascular pedicle information
Impact: Prevents downcoding to simple skin graft codes (15100-15101) which reimburse only $150-300 versus $1466.27 for CPT 15734
Report modifier 22 with supporting documentation when operative time exceeds 4 hours or unusual complexity exists (prior radiation, scarring, multiple flaps)
Impact: Can increase reimbursement by $293-733 (20-50% increase) when properly documented with comparison to typical case
Bill separately for tumor excision or debridement using appropriate codes (11600-11646, 21601-21632) with modifier 59 when performed as distinct procedure
Impact: Captures additional $200-2000+ depending on excision complexity; requires clear documentation of separate incisions or anatomic sites
Verify both facility and non-facility rates are identical ($1466.27) for 15734; no payment differential exists based on site of service unlike many other codes
Impact: Billing insight: no financial advantage to site selection from reimbursement perspective; focus on medical appropriateness and patient safety
Use specific ICD-10 codes documenting both the defect requiring repair (C49.x for trunk sarcoma, L89.x for pressure ulcer, S21.x for trauma) and the reconstruction (Z42.x aftercare codes)
Impact: Proper diagnosis coding prevents medical necessity denials which account for 30-40% of initial denials for this code
Submit operative photos (pre-op defect, intraoperative flap elevation, post-closure) with initial claim for cases over $1500 or when using modifier 22

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 15734?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT code 15734 in 2025?

The 2025 Medicare national average reimbursement for CPT 15734 is $1466.27 for both facility and non-facility settings. This rate is based on 45.33 total RVUs (23.00 work RVU + 17.39 practice expense RVU + 4.94 malpractice RVU) multiplied by the 2025 conversion factor of 32.3465.

Can CPT 15734 be billed with the tumor excision code on the same day?

Yes, CPT 15734 can be billed separately from tumor excision codes (such as 21552-21558 for trunk tumors or 11600-11646 for skin lesions) when both procedures are performed during the same operative session, provided they represent distinct procedural services. Use modifier 59 on the excision code and document the separate nature of the excision versus reconstruction phases, including separate operative times and distinct techniques.

What muscle-skin flaps are typically coded as 15734?

Common muscle-skin flaps coded as CPT 15734 include latissimus dorsi flaps for chest wall or back reconstruction, pectoralis major flaps for anterior chest or sternal coverage, rectus abdominis flaps for lower chest or abdominal wall defects, and trapezius flaps for upper back or posterior neck reconstruction. The key requirement is that the flap includes both muscle and skin components from the trunk area.

How does CPT 15734 differ from adjacent tissue transfer codes?

CPT 15734 describes a muscle-skin composite flap with named vascular pedicle, involving significant undermining and muscle harvest, while adjacent tissue transfer codes (14000-14302) describe skin and subcutaneous tissue rearrangement without muscle component. Code 15734 has significantly higher reimbursement ($1466.27 vs $200-600) and requires documentation of the muscle component and its vascular supply to justify the higher level of complexity.

What documentation is required to support medical necessity for CPT 15734?

Medical necessity documentation must include defect size and depth measurements, identification of exposed structures (bone, cartilage, vessels, organs) requiring muscle coverage, explanation of why simpler closure methods are inadequate, description of tissue quality issues (radiation damage, infection, previous surgery), and functional or structural consequences if reconstruction not performed. Photographs of the defect strengthen medical necessity justification significantly.

Is CPT 15734 subject to the Medicare global surgical package?

Yes, CPT 15734 has a 90-day global period, meaning routine postoperative care including normal follow-up visits, minor complications, and dressing changes within 90 days are included in the $1466.27 reimbursement. Only significant complications requiring return to the OR (reported with modifier 78 or 79) or staged procedures planned at the time of original surgery (modifier 58) can be billed separately during the global period.

When should modifier 22 be used with CPT 15734?

Modifier 22 should be appended to CPT 15734 when the procedure requires substantially greater complexity, time, or technical difficulty than typical cases—such as multiple flaps, severe scarring from radiation or previous surgery, extensive undermining beyond typical requirements, or unusual patient anatomy. Documentation must include comparison to a typical 15734 procedure, specify additional time required (typically 50%+ longer), and describe specific factors increasing complexity. Additional payment of 20-50% is possible with strong documentation.