Summary & Overview
CPT 15738: Muscle or Fasciocutaneous Flap for Lower Extremity
CPT code 15738 is a critical billing code for reconstructive surgical procedures involving muscle, myocutaneous, or fasciocutaneous flaps of the lower extremity. This code is widely used in cases where patients require advanced tissue repair due to trauma, chronic wounds, or complex soft tissue disorders. The procedure is essential for restoring function and appearance in affected limbs, making it a key component of modern plastic and reconstructive surgery.
Major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare, recognize and reimburse for CPT 15738. Understanding payer coverage and policy nuances is vital for providers and billing professionals to ensure accurate claims and compliance.
This publication provides a comprehensive overview of CPT 15738, including clinical context, payer coverage, and related coding benchmarks. Readers will gain insights into the procedure’s role in surgical care, common clinical indications, and associated diagnoses such as open wounds and chronic ulcers of the lower leg. The article also highlights relevant modifiers and related CPT codes, offering a clear framework for navigating billing and documentation requirements. Policy updates and trends in reimbursement are discussed to inform stakeholders about the evolving landscape of reconstructive surgery billing.
CPT Code Overview
CPT 15738 describes a surgical procedure involving the creation of a muscle, myocutaneous, or fasciocutaneous flap for the lower extremity. This technique is commonly used in reconstructive surgery to repair or cover defects resulting from trauma, chronic wounds, or other conditions affecting the lower leg. The procedure is classified under Surgical – Flaps (Skin and/or Deep Tissues) Procedures. Typical site of service information is not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult patient presenting with a complex open wound or chronic ulcer of the lower leg, such as a non-healing traumatic injury or a chronic ulcer that has failed conservative management. The wound may be associated with complications like soft tissue loss or infection. The clinical workflow includes assessment by a plastic or reconstructive surgeon, planning for tissue coverage, and performing a muscle, myocutaneous, or fasciocutaneous flap procedure (15738) to restore function and promote healing. The procedure may require collaboration with other surgical specialists, especially in cases involving trauma or extensive tissue damage.
Coding Specifications
| Modifier Code | Description | When Used |
|---|---|---|
62 | Two Surgeons | Applied when two surgeons perform distinct parts of the procedure, each acting as a primary surgeon. |
80 | Assistant Surgeon | Used when an assistant surgeon is required to help with the procedure. |
Associated Provider Taxonomies:
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208600000X– Plastic and Reconstructive Surgery (specialists in surgical repair and reconstruction of skin and soft tissues) -
207XS0117X– Surgical Critical Care (surgeons specializing in critical care management of surgical patients) -
208200000X– Plastic Surgery (specialists in plastic surgery procedures, including flaps and wound closure)
Related Diagnoses
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S81.801A– Unspecified open wound, right lower leg, initial encounter- Relevant for patients with acute traumatic wounds requiring flap coverage.
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S81.802A– Unspecified open wound, left lower leg, initial encounter- Indicates acute open wounds of the left lower leg, often necessitating surgical intervention with a flap.
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T79.8XXA– Other early complications of trauma, initial encounter- Used when the wound is complicated by early trauma-related issues, supporting the need for advanced tissue coverage.
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M79.89– Other specified soft tissue disorders- Applies to cases with non-traumatic soft tissue disorders that may require flap reconstruction.
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L97.909– Non-pressure chronic ulcer of unspecified part of unspecified lower leg with unspecified severity- Indicates chronic ulcers of the lower leg, a common indication for flap procedures when conservative treatments fail.
Related CPT Codes
| CPT Code | Description | Clinical Relationship |
|---|---|---|
15734 | Muscle, myocutaneous, or fasciocutaneous flap; head and neck | Used for similar flap procedures in the head and neck region; alternative to 15738 when the site is different. |
15736 | Muscle, myocutaneous, or fasciocutaneous flap; upper extremity | Used for flap procedures in the upper extremity; alternative to 15738 for upper limb wounds. |
15732 | Muscle, myocutaneous, or fasciocutaneous flap; trunk | Used for trunk wounds; alternative to 15738 for trunk coverage. |
13160 | Secondary closure of surgical wound or dehiscence, extensive or complicated | May be used in conjunction with 15738 for closure of wounds after flap placement or for managing wound dehiscence. |
Codes 15734, 15736, and 15732 are alternatives based on anatomical site. Code 13160 is commonly used together with 15738 in cases requiring secondary closure after flap placement.
National Reimbursement Benchmarks
For CPT code 15738, national mean rates for commercial payers are substantially higher than Medicare. The average commercial rate, represented by BUCA, is $1,585.82, while Medicare's mean rate is $1,167.17. UnitedHealth Group and Cigna have the highest mean rates among commercial payers, at $2,199.37 and $2,060.79 respectively.
Rate dispersion varies significantly across payers. Medicare shows the tightest range, with a difference of only $85.00 between the 75th and 25th percentiles. In contrast, UnitedHealth Group exhibits the widest spread, with a $1,263.00 difference between its 75th and 25th percentiles. Cigna and BUCA also display broad ranges, indicating greater variability in commercial reimbursement rates.
The table and chart below present a detailed breakdown of national benchmarks for each payer.
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