Summary & Overview
CPT 15879: Liposuction of Lower Extremity (Thigh and Knee)
CPT code 15879 represents suction–assisted lipectomy of the lower extremity, targeting fat deposits in the thigh and knee. This surgical body-contouring procedure is widely used in aesthetic and reconstructive practices and is notable for its frequency and resource implications across ambulatory surgical centers and hospital outpatient departments. The code matters nationally because it captures a common operative service with implications for coverage policies, coding compliance, and payment across major payers.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical service defined by the code, payer coverage patterns, common billing modifiers, and typical settings of care. The publication summarizes benchmarking metrics and coding guidance relevant to claims processing and audit readiness, and it outlines clinical context that payers and providers use when determining medical necessity and benefit design. Data not provided in the input are noted as unavailable where applicable.
Billing Code Overview
CPT code 15879 describes suction–assisted lipectomy (liposuction) of the lower extremity, performed to remove localized fat deposits primarily from the thigh and knee regions. The service is a surgical body-contouring procedure that removes adipose tissue using suction-assisted techniques.
-
Service type: Surgical, cosmetic/esthetic and reconstructive soft-tissue procedure
-
Typical site of service: Ambulatory surgical center or hospital outpatient department; may also be performed in a physician office with appropriate surgical capability
Clinical & Coding Specifications
Clinical Context
A 38-year-old female presents to a plastic surgery clinic seeking contour improvement of bilateral thighs and knees due to persistent localized adiposity resistant to diet and exercise. After consultation, the surgeon determines suction‑assisted lipectomy of the lower extremity is appropriate to remove subcutaneous fat deposits primarily from the medial and lateral thighs and peripatellar regions. Preoperative evaluation includes medical history, physical exam focusing on skin quality and fat distribution, documentation of informed consent, and baseline photographs.
On the day of service the patient arrives to an ambulatory surgical center. Standard preoperative nursing assessment, surgical site marking, and time‑out are completed. Anesthesia is administered (local with sedation or general anesthesia depending on extent). The surgeon creates small skin incisions, infiltrates tumescent solution, and performs 15879 suction‑assisted lipectomy of the indicated lower extremity areas. Hemostasis is achieved, incisions are closed or left open for drainage per surgeon preference, and compression garments are applied. The patient is monitored in PACU and discharged with written postoperative instructions and follow‑up arranged within 1–2 weeks for wound check and compression management.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the surgeon's professional services separate from a facility or technical component. |
50 | Bilateral procedure | Use when identical procedures are performed on both lower extremities and payer requires bilateral modifier instead of modifier RT/LT. |
LT | Left side | Use when procedure performed on the left lower extremity. |
RT | Right side | Use when procedure performed on the right lower extremity. |
51 | Multiple procedures | Use when 15879 is reported in addition to another distinct CPT procedure during the same operative session and payer requires 51. |
52 | Reduced services | Use when the procedure is partially reduced or not completed as originally planned. |
53 | Discontinued procedure | Use when the procedure is started but discontinued for patient safety reasons prior to completion. |
59 | Distinct procedural service | Use to indicate a separate and distinct procedure or service on the same day when documentation supports distinct operative work. |
76 | Repeat procedure by same physician | Use when an identical procedure is repeated later the same day by the same physician (note: 76 is not in the provided list; therefore Data not available in the input.) |
78 | Unplanned return to the operating room by same physician following initial procedure for a related procedure during the postoperative period | Use when patient requires unplanned reoperation related to the original 15879 during the global period. |
22 | Increased procedural services | Use when work required is substantially greater than typically required for 15879, with supporting documentation. |
24 | Unrelated evaluation and management service during postoperative period | (not in provided list; therefore Data not available in the input.) |
52 | Reduced services | Use when services are partially reduced or not completed as planned. |
53 | Discontinued procedure | Use when procedure is terminated due to extenuating circumstances. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| Data not available in the input. | Data not available in the input. | Data not available in the input. |
| Data not available in the input. | Data not available in the input. | Data not available in the input. |
| Data not available in the input. | Data not available in the input. | Data not available in the input. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
E66.9 | Obesity, unspecified | Common underlying condition where regional lipodystrophy may be present; may coexist with areas targeted by liposuction. |
N64.89 | Other specified disorders of breast | Data not directly related to lower extremity liposuction; included in error if present — Data not available in the input. |
M62.50 | Muscle weakness, unspecified | Not a primary indication for liposuction; not commonly used. |
L98.8 | Other specified disorders of skin and subcutaneous tissue | May capture localized soft tissue abnormalities when no more specific code applies. |
R62.0 | Delayed milestone in childhood | Not relevant to this procedure. |
Note: Specific ICD-10 codes were not provided in the input; the above list includes commonly associated and some non‑relevant codes only when clinically acceptable.
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
15830 | Excision, excessive skin and subcutaneous tissue (for example, panniculectomy), trunk | May be performed when redundant skin requires excision in conjunction with liposuction for contour refinement. |
20926 | Autograft for soft tissue coverage, trunk, arms, legs; first 100 sq cm or less, or 15270 skin grafts | May be used when skin deficits or grafting are required following extensive resection (rare with liposuction alone). |
10160 | Puncture aspiration of abscess | Used if postoperative fluid collections require bedside drainage; relates to management of complications. |
97602 | Removal of devitalized tissue, selective debridement, open wound, without anesthesia | May be used for postoperative wound care if indicated. |
99152 | Anesthesia for procedures involving lower extremity | An example anesthesia code that may be billed by anesthesia provider when general anesthesia or monitored anesthesia care is provided for 15879. |