Summary & Overview

CPT 15733: Local Forehead/Jaw/Neck Flap Reconstruction

CPT code 15733 represents local flap reconstruction using a muscle, myocutaneous, or fasciocutaneous flap from the forehead, jaw, or neck region to cover an adjacent defect. This procedure is a key reconstructive technique in head and neck surgery, preserving vascular supply to the flap for reliable wound coverage and tissue restoration. Nationally, the code is relevant for surgical specialties managing traumatic, oncologic, and complex soft-tissue defects where local tissue transfer is preferred over free tissue transfer.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The discussion addresses how 15733 is used across hospital and ambulatory surgical settings and summarizes standard clinical contexts where local flap reconstruction is appropriate.

Readers will learn what CPT code 15733 denotes clinically, where the service is typically delivered, and which major payers are relevant to reimbursement considerations. The publication also outlines benchmarks and common billing scenarios, highlights policy and coverage issues affecting reconstructive flap procedures, and situates 15733 within head and neck surgical practice. Data not available in the input will be indicated as such in relevant sections.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 15733local flap reconstructionhead and neck surgerymyocutaneous flapfasciocutaneous flapsurgical codingreconstructive surgeryoperating room procedures

Billing Code Overview

CPT code 15733 describes the surgical development of a muscle, myocutaneous, or fasciocutaneous flap harvested from muscles in the forehead, perijaw, or neck region while preserving the flap's vascular supply and using it to cover an adjacent defect. The procedure involves mobilizing local soft-tissue with its blood supply intact to repair nearby soft-tissue losses.

Service type: Local flap reconstruction (muscle/myocutaneous/fasciocutaneous flap)
Typical site of service: Operating room or surgical suite, commonly performed in hospitals or ambulatory surgical centers for head and neck soft-tissue reconstruction.

Clinical & Coding Specifications

Clinical Context

A 62-year-old male presents with a full-thickness cutaneous and soft-tissue defect of the lower face and upper neck following wide local excision of a recurrent squamous cell carcinoma. The defect measures 6 x 4 cm with exposed subcutaneous tissue and partial exposure of underlying muscle. Preoperative assessment includes history and physical, review of imaging to confirm clear margins, and evaluation of vascular status and comorbidities (diabetes, smoking history). The plastic surgeon plans an ipsilateral myocutaneous flap harvested from the adjacent neck musculature, preserving the pedicle vascular supply to cover the defect and provide durable soft-tissue bulk and a skin paddle for external coverage. The patient is taken to the operating room under general anesthesia. The surgeon outlines and elevates the flap, preserves perforators, rotates the flap into the defect, secures it with layered closure, and places drains as indicated. Intraoperative documentation includes primary diagnosis, size and location of the defect, flap design and muscle/fascia components, identification of vascular pedicle, any intraoperative complications, and estimated blood loss. Typical postoperative workflow includes flap perfusion monitoring, pain control, wound checks, and discharge planning with outpatient wound and suture care, and potential referral for adjuvant radiation if indicated by pathology.

Coding Specifications

Modifier	Description	When to Use
`11`	Normal or routine service	Use when the procedure is performed without complication or unusual effort beyond usual for the surgeon.
`22`	Increased procedural services	Use when the work required is substantially greater than typically required (eg, extensive dissection, revision after prior radiation).
`52`	Reduced services	Use when the procedure is partially reduced or not completed as 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 flap or other distinct procedure on the same day not normally bundled.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct portions of the flap reconstruction.
`66`	Surgical team	Use when a surgical team performs the procedure (multiple assisting surgeons for complex reconstructions).
`80`	Assistant surgeon	Use when an assistant surgeon is present and performs a portion of the operation.
`82`	Assistant surgeon (when qualified resident not available)	Use when an assistant is required but a qualified resident is not available.
`LT`	Left side	Use to identify laterality when the flap or donor site is left-sided.
`RT`	Right side	Use to identify laterality when the flap or donor site is right-sided.
`59`	Distinct procedural service	See above — used to indicate separately identifiable service (listed once in practice).
`23`	Unusual anesthesia	Use when general anesthesia is not used due to severe systemic disease and an unusual form of anesthesia is documented (rare for this code).
`22`	Increased procedural services	See above — used when documentation supports substantially greater work.

Taxonomy Code	Specialty	Notes
207L00000X	Plastic Surgery	Primary specialty performing flap reconstruction for head and neck defects.
208M00000X	Otolaryngology (ENT)	Frequently performs head and neck tumor resection and local flap reconstruction.
208600000X	Oral and Maxillofacial Surgery	Performs facial soft-tissue and reconstructive procedures involving jaws and overlying tissues.
208C00000X	General Surgery	May perform cervicofacial flap reconstruction in some trauma or oncologic settings.
207X00000X	Dermatology (Mohs & reconstructive)	Dermatologic surgeons may perform local myocutaneous or fasciocutaneous flaps for defect coverage after skin cancer excision.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C44.311`	Squamous cell carcinoma of skin of right lower eyelid, including canthus	Common head and neck skin malignancy that may require excision and local flap reconstruction.
`C44.312`	Squamous cell carcinoma of skin of left lower eyelid, including canthus	Same as above for left-sided lesions.
`C44.219`	Squamous cell carcinoma of skin of unspecified ear and external auricular canal	Tumors of adjacent facial/neck regions requiring local flap coverage after excision.
`S01.811A`	Laceration without foreign body of right cheek and temporal region, initial encounter	Traumatic soft tissue loss of the face that may be reconstructed with local myocutaneous flaps.
`T81.31XA`	Disruption of external operation (wound), not elsewhere classified, initial encounter	Postoperative wound dehiscence or failure of primary closure necessitating flap reconstruction.
`M79.2`	Neuralgia and neuritis, unspecified	Included to reflect situations with nerve involvement where reconstruction must account for nearby neural structures.
`L98.4`	Non-healing surgical wound	Chronic non-healing wounds in the head and neck that may require flap coverage.
`D49.2`	Neoplasm of uncertain behavior of skin	Lesions necessitating excision with reconstruction when malignancy cannot be excluded.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`13131`	Repair, complex, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands, and/or feet; 2.6 cm to 7.5 cm	May be used for complex primary closure of donor or adjacent defects smaller than those requiring flap, or for layered closure of residual wound edges.
`14301`	Adjacent tissue transfer or rearrangement, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands, and/or feet; defect 10 sq cm or less, single flap	Used for local tissue rearrangement; may be selected when less extensive movement of tissue is required than a myocutaneous flap.
`15734`	Muscle, myocutaneous, or fasciocutaneous flap; trunk	Related regional flap code for trunk location — listed for documentation of similar technique in different anatomic region.
`19318`	Reduction mammoplasty; secondary	Example of flap/complex reconstructive coding in another anatomic area — demonstrates principles of coding for myocutaneous flaps when performed for reconstruction.
`69990`	Operating microscope, use and maintenance (List separately in addition to code for primary procedure)	May be billed when microsurgical assistance is needed for vascular anastomosis of pedicled or free flaps (if applicable).
`99024`	Postoperative follow-up visit, included in global period	Postoperative visits related to the flap within the surgical global period are typically included and not separately billable except as documented exceptions.