Summary & Overview
CPT 15734: Muscle or Myocutaneous Flap Surgery for Trunk Reconstruction
CPT code 15734 is a critical surgical billing code used for the creation of muscle, myocutaneous, or fasciocutaneous flaps on the trunk. This procedure is essential in reconstructive surgery, addressing complex wounds, infections, or defects resulting from trauma or prior operations. The code is widely recognized across major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare, ensuring broad coverage for patients requiring advanced surgical intervention.
This publication provides a comprehensive overview of CPT 15734, including its clinical context, typical site of service, and its role in inpatient hospital settings. Readers will gain insight into payer coverage, relevant modifiers, associated provider taxonomies, and common ICD-10 diagnoses linked to this procedure. The article also highlights related CPT codes for similar flap procedures in other anatomical regions and breast reconstruction, offering a broader perspective on reconstructive surgical coding. Policy updates, coding benchmarks, and clinical indications are discussed to inform stakeholders about current trends and requirements in medical billing for complex trunk reconstruction. This resource is designed for healthcare professionals, billing specialists, and policy analysts seeking clarity on the use and significance of CPT 15734 in surgical practice.
CPT Code Overview
CPT 15734 describes the surgical creation of a muscle, myocutaneous, or fasciocutaneous flap on the trunk. This procedure is performed to reconstruct or repair defects in the trunk area, often following trauma, infection, or surgical excision of diseased tissue. The service type is surgery, and the typical site of service is an inpatient hospital setting (POS 21). This code is used by surgeons specializing in complex wound management and reconstructive procedures involving the trunk.
Clinical & Coding Specifications
Clinical Context
A patient is admitted to an inpatient hospital with a complex wound or soft tissue defect on the trunk, such as following trauma, surgical complications, or infection. The clinical workflow involves evaluation by a surgical or plastic surgery physician, determination that primary closure is not feasible, and planning for reconstruction using a muscle, myocutaneous, or fasciocutaneous flap. The procedure coded as 15734 is performed to restore function and provide durable coverage for the defect, often in the context of wound disruption, infection, or other soft tissue disorders. Postoperative care includes monitoring for flap viability and management of any complications.
Coding Specifications
-
Modifier
51: Used when multiple procedures are performed during the same operative session. Indicates that15734is one of several procedures. -
Modifier
59: Used to denote a distinct procedural service, such as when15734is performed separately from other procedures on the same day.
| Modifier Code | Description |
|---|---|
51 | Multiple Procedures |
59 | Distinct Procedural Service |
- Provider Taxonomies:
| Taxonomy Code | Specialty |
|---|---|
208600000X | Surgery Physician |
208200000X | Plastic Surgery Physician |
2086S0122X | Surgical Critical Care Physician |
These taxonomies represent providers qualified to perform surgical reconstruction of the trunk using muscle or fasciocutaneous flaps.
Related Diagnoses
-
T81.30XA: Disruption of wound, unspecified, initial encounter- Indicates a patient presenting with a wound that has reopened, often requiring surgical intervention such as a flap for closure.
-
L98.3: Eosinophilic cellulitis [Wells]- Represents a rare inflammatory skin disorder that may cause tissue damage necessitating reconstructive surgery.
-
M79.89: Other specified soft tissue disorders- Covers a range of soft tissue conditions that could result in defects needing flap coverage.
-
S21.301A: Unspecified open wound of unspecified part of thorax, initial encounter- Describes an open wound on the trunk, which may require a muscle or fasciocutaneous flap for closure.
-
T81.4XXA: Infection following a procedure, initial encounter- Refers to postoperative infection, a common indication for flap reconstruction to manage infected or non-healing wounds.
Related CPT Codes
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15732: Muscle, myocutaneous, or fasciocutaneous flap; head and neck- Used for similar flap procedures on the head and neck. Not typically used together with
15734, but may be an alternative if the defect is in a different anatomical region.
- Used for similar flap procedures on the head and neck. Not typically used together with
-
15733: Muscle, myocutaneous, or fasciocutaneous flap; lower extremity- Used for flap reconstruction of the lower extremity. Functions as an alternative to
15734for defects below the trunk.
- Used for flap reconstruction of the lower extremity. Functions as an alternative to
-
15738: Muscle, myocutaneous, or fasciocutaneous flap; upper extremity- Used for flap procedures on the upper extremity. May be used in cases where multiple sites require reconstruction.
-
19357: Breast reconstruction, immediate or delayed, with tissue expander- Often used in conjunction with flap procedures for breast reconstruction, especially following mastectomy. May be coded alongside
15734if trunk flaps are used for breast reconstruction.
- Often used in conjunction with flap procedures for breast reconstruction, especially following mastectomy. May be coded alongside
National Reimbursement Benchmarks
For CPT code 15734, national mean rates show that UnitedHealth Group and Cigna reimburse at the highest levels, with UnitedHealth Group averaging $2,508.39 and Cigna at $2,322.11. In contrast, Medicare's mean rate is $1,405.66, which is significantly lower than the BUCA (Blue Cross Blue Shield, UnitedHealth Group, Cigna, Aetna) commercial average of $1,822.45.
Rate dispersion varies notably across payers. Medicare exhibits the tightest range between the 25th and 75th percentiles ($107.00), indicating relatively consistent reimbursement. UnitedHealth Group has the widest spread ($1,533.00), reflecting substantial variability in commercial rates. Cigna and Blue Cross Blue Shield also show broad ranges, while Aetna and BUCA are more moderate.
The table and chart below present a detailed breakdown of national benchmarks for each payer, including mean rates and percentile values.
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.