CPT 56634: Radical Vulvectomy with Unilateral Inguinofemoral Lymph Node Removal
CPT code 56634 denotes a radical vulvectomy, a major gynecologic oncology operation performed to remove all or part of the vulva for malignant disease and to excise unilateral inguinofemoral lymph nodes. As an extensive resective procedure often requiring inpatient surgical care, this code captures services with substantial clinical complexity and resource use. Nationally, accurate coding for radical vulvectomy affects surgical quality measurement, hospital reimbursement, and oncology care pathways.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and typical sites of service, plus what to expect in terms of documentation and coding considerations tied to major gynecologic oncologic surgery. The publication also summarizes benchmark metrics, common claim modifiers supplied in the input, and relevant policy considerations that frequently influence coverage and payment for extensive vulvar surgery.
This summary is intended for clinicians, coding professionals, and policy analysts seeking a national-level briefing on the clinical meaning and billing context of CPT code 56634, including the role the code plays in surgical oncology workflows and hospital billing lines. Data not available in the input are identified where applicable.
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Billing Code Overview
CPT code 56634 represents a radical vulvectomy, a surgical procedure to remove all or part of the vulva to treat malignant disease. The operation includes unilateral removal of the inguinofemoral lymph nodes and may include removal of the clitoris depending on disease extent. As a radical oncologic procedure, tissue adjacent to the malignancy is removed to achieve clear margins.
Service Type: Major gynecologic oncologic surgery
Typical Site of Service: Inpatient hospital surgical setting
Clinical & Coding Specifications
Clinical Context
A 62-year-old female presents with a biopsy-confirmed squamous cell carcinoma of the vulva involving the left labia majora and extending toward the clitoral region. Preoperative workup includes pelvic examination, imaging (pelvic MRI or CT), and sentinel lymph node evaluation. The surgical plan is a radical vulvectomy with removal of the involved vulvar tissue including partial clitoral resection as indicated and unilateral inguinofemoral lymphadenectomy for staging and regional control. The procedure is performed in an operating room setting under general anesthesia with perioperative antibiotics and venous thromboembolism prophylaxis. Intraoperative steps include wide local excision of vulvar tumor with margins, dissection of adjacent soft tissue, unilateral inguinofemoral lymph node removal, hemostasis, possible wound drain placement, and layered closure or reconstructive flap if needed. Postoperative workflow includes recovery in PACU, inpatient monitoring for pain control and wound care, pathology review of surgical margins and lymph nodes, coordination with medical oncology and radiation oncology for adjuvant therapy based on final stage, and routine wound checks and surveillance visits.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required is substantially greater than typical for 56634 (e.g., extensive resection, complex reconstruction). |
23 | Unusual anesthesia | Use when general anesthesia is not used due to unusual circumstances but the procedure required anesthesia-related services beyond local/regional. |
26 | Professional component | Use when billing professional interpretation or component separate from technical facility services, if applicable to pathology charges (rare for this surgical code). |
50 | Bilateral procedure | Use if a bilateral vulvectomy is performed and payer requires bilateral modifier in addition to 56634 documentation. |
51 | Multiple procedures | Use when 56634 is billed on the same day with additional discrete surgical procedures; report secondary procedures with modifier 51 as required by payer. |
52 | Reduced services | Use when the procedure is intentionally partially reduced or not completed (e.g., aborted limited resection). |
53 | Discontinued procedure | Use when the procedure is started but terminated due to extenuating circumstances. |
62 | Two surgeons | Use when two surgeons work together as primary surgeons performing distinct portions of the 56634 procedure. |
63 | Procedure performed on infants younger than 4 kg | Not typical for this code but included for completeness when special patient weight-based modifier rules apply. |
78 | Unplanned return to OR | Use when patient returns to the operating room for a related procedure during the global period (e.g., reoperation for hemorrhage or wound complication). |
80 | Assistant surgeon | Use when an assistant surgeon (general) participates and payer requires reporting of assistant services. |
81 | Minimum assistant surgeon | Use when minimal assistance is provided and allowed by payer policies. |
82 | Assistant surgeon when qualified resident unavailable | Use when a non-physician assistant or qualified practitioner assists because a qualified resident is not available. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207VG0100X | Obstetrics & Gynecology | Gynecologic oncologists or gynecologists perform vulvectomy and regional lymphadenectomy. |
| 2080P0207X | General Surgery | Surgical oncologists or general surgeons with oncologic training may perform inguinofemoral lymphadenectomy and complex resections. |
| 2084P0800X | Surgical Oncology | Specialists in surgical oncology perform extensive resections and reconstructions for vulvar malignancies. |
| 163W00000X | Anesthesiology | Anesthesia providers manage perioperative anesthesia for 56634. |
| 207RH0000X | Gynecologic Oncology | Subspecialty gynecologic oncologists commonly perform radical vulvectomy for invasive vulvar cancer. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
C51.0 | Malignant neoplasm of labium majus | Primary vulvar cancer site often requiring radical vulvectomy. |
C51.1 | Malignant neoplasm of labium minus | Tumor involving inner labia may necessitate partial or radical vulvectomy. |
C51.2 | Malignant neoplasm of clitoris | Cancer involving clitoral tissue can require clitoral removal during radical vulvectomy. |
C51.8 | Malignant neoplasm of overlapping sites of vulva | Tumors spanning multiple vulvar subsites commonly treated with radical resection. |
C51.9 | Malignant neoplasm of vulva, unspecified | Used when specific vulvar subsite not documented but radical surgery is indicated. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
56634 | Radical vulvectomy including unilateral inguinofemoral lymphadenectomy | Primary procedure for invasive vulvar malignancy; includes removal of affected vulvar tissue and unilateral lymph node dissection. |
38740 | Lymphadenectomy, inguinofemoral, unilateral | Often performed concomitantly or explicitly listed when a separate lymphadenectomy is billed in addition to vulvectomy; relates to regional nodal staging. |
56501 | Radical vulvectomy, simple (partial) (excision of vulva) | May be billed for less extensive resections or when coding for a more limited vulvar excision in the same episode. |
12032 | Repair of wound dehiscence or secondary closure, large | May be performed postoperatively for wound complications requiring operative repair. |
11042 | Debridement, subcutaneous tissue | May be used for management of infected or necrotic wounds in the postoperative period. |