Summary & Overview

CPT 14021: Local Flap Repair of Scalp, Arms, or Legs (10.1–30.0 cm²)

CPT code 14021 denotes repair of lesions on the scalp, arms, or legs using adjacent healthy tissue (local flap) for defects measuring 10.1 cm² to 30.0 cm². This procedure-level surgical code matters nationally because it captures resource use and clinical complexity for common reconstructive needs following tumor excision, trauma, or other skin defects. Accurate coding influences coverage determinations, provider reimbursement, and clinical quality measurement for reconstructive procedures.

Key payers included in the discussion are Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for when and where the procedure is performed, typical service lines and sites of care, and the code’s positioning among related reconstruction codes. The publication highlights benchmarking considerations, payer coverage patterns, and coding nuances that affect claims processing and medical necessity review. Relevant clinical and billing guidance is summarized to help stakeholders interpret the code consistently across settings.

The content is organized to provide quick reference on code definition and typical use, followed by practical considerations for claims and payer engagement, and ends with directions for finding associated documentation and related codes. Data not available in the input is explicitly noted where applicable.

AetnaBlue Cross Blue ShieldCignaUnitedHealthcareMedicare14021CPTlocal flapreconstructive surgeryskin lesion repairoutpatient surgerysurgical codingwound closure

Billing Code Overview

CPT code 14021 describes a surgical repair in which the provider repairs lesions on the scalp, arms, or legs using healthy tissue from an adjacent site. This code applies to a defect size of 10.1 cm² to 30.0 cm².

Service type: Partial-thickness or full-thickness soft tissue reconstruction using adjacent tissue transfer (local flap) to close a defect.
Typical site of service: Ambulatory surgery center or hospital outpatient department; may also be performed in an office-based surgical setting when appropriate.

Clinical & Coding Specifications

Clinical Context

A 58-year-old male presents to an outpatient dermatologic surgery clinic after a traumatic laceration and partial-thickness skin loss on his forearm sustained 10 days earlier that failed primary closure and resulted in a 15 cm² defect. The provider plans a local flap reconstruction using adjacent healthy tissue to close the defect and restore contour and function. Pre-procedure workflow includes history and physical, informed consent, medication reconciliation, and assessment of bleeding risk. The procedure is performed under local anesthesia with monitored settings in an ambulatory surgery center. Post-procedure care includes wound dressings, analgesia, instructions on activity restriction, a follow-up visit for suture removal at 7–14 days, and documentation of defect size (15 cm²) to support use of 14021 for a defect between 10.1 cm² and 30.0 cm². Billing considerations include selecting appropriate modifier(s) for laterality, professional component, or unusual circumstances and coding the primary diagnosis that prompted reconstruction (for example, traumatic laceration or excised skin lesion).

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the physician’s professional service separate from technical facility charges in split-billing arrangements.
`50`	Bilateral procedure	Use when the same flap reconstruction is performed bilaterally during the same operative session.
`51`	Multiple procedures	Use when multiple distinct procedures are performed during the same operative session alongside the flap repair.
`52`	Reduced services	Use when the service is partially reduced or not completed as originally planned.
`53`	Discontinued procedure	Use when the procedure is started but terminated due to extenuating circumstances.
`59`	Distinct procedural service	Use to indicate a separate and distinct procedure or site when multiple interventions are performed on the same day.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct portions of the reconstruction.
`66`	Surgical team	Use when a surgical team approach is documented for complex reconstructive cases.
`78`	Return to operating room for related procedure during the postoperative period	Use when an unplanned return to the OR for revision or complication occurs within the global period.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when an unrelated procedure is performed by the same physician during the global period.
`RT`	Right side	Use to designate procedures performed on the right side when laterality affects billing.
`LT`	Left side	Use to designate procedures performed on the left side when laterality affects billing.
`22`	Increased procedural services	Use when the work required is substantially greater than typical and properly documented to justify higher payment.

Taxonomy Code	Specialty	Notes
207L00000X	Dermatology	Dermatologic surgeons commonly perform local flap repairs for skin defects.
208800000X	General Surgery	General surgeons perform soft-tissue reconstructions in outpatient and inpatient settings.
207P00000X	Plastic Surgery	Plastic and reconstructive surgeons manage complex local flap closures and contour restoration.
207RC0000X	Facial Plastic Surgery	Facial plastic surgeons perform flap reconstruction for scalp and facial defects when applicable.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`12032`	Repair, intermediate, wounds of scalp, arms, and/or legs; 2.6 cm to 7.5 cm	May be performed for smaller primary closures prior to selecting flap reconstruction when defect size is smaller.
`14040`	Adjacent tissue transfer or rearrangement, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands and/or feet; defect 30.1 sq cm to 60.0 sq cm	Used for larger adjacent tissue transfers when defect exceeds the size range for `14021`.
`13131`	Repair, complex, trunk; 30.1 sq cm to 60.0 sq cm (complex repair codes vary by anatomic site)	May be used for complex layered repairs when additional work beyond a local flap is required.
`12020`	Repair, simple, wounds of scalp, arms, and/or legs; 2.5 cm or less	Used for very small defects where simple closure is appropriate instead of flap reconstruction.
`67028`	Intravitreal injection (example of unrelated ophthalmic procedure)	Listed as a possible unrelated same-day service where modifier `79` or `59` might be applied if performed during the global period or same date of service.