Summary & Overview
CPT 11621: Excision of Malignant Skin Lesion, 0.6–1.0 cm
CPT code 11621 denotes surgical excision of a malignant skin lesion, including margins, for lesions measuring 0.6 to 1.0 cm in diameter in anatomically sensitive sites such as the scalp, neck, hands, feet, or genitalia. This code is commonly used in dermatologic and surgical oncology practice and matters nationally because it standardizes billing for a frequently performed cancer-directed procedure that carries implications for quality measurement, coding accuracy, and reimbursement consistency across payers. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare.
Readers will find a concise overview of clinical context and coding parameters for 11621, comparisons to adjacent size-based excision codes, and the payer landscape informing coverage and administrative considerations. The publication summarizes benchmarks for billing frequency and common service settings, highlights coding relationships to nearby CPT codes for different lesion sizes, and presents policy and coding issues that affect claim adjudication and documentation practices. This national-level briefing is intended to clarify the clinical scope of the code, outline the primary payer coverage universe, and orient readers to the operational and policy dimensions relevant to managing claims for excision of small malignant cutaneous lesions.
Billing Code Overview
CPT code 11621 describes the surgical excision of a malignant skin lesion, including margins, with a lesion diameter of 0.6 to 1.0 cm. The procedure involves removal of the cancerous lesion from anatomically sensitive or functionally important regions.
Service type: Surgical excision of malignant cutaneous lesion
Typical site of service: Skin of the scalp, neck, hands, feet, or genitalia (sex organs)
Clinical & Coding Specifications
Clinical Context
A 68-year-old male presents to a dermatology clinic with a biopsy-proven basal cell carcinoma on the right nasal ala measuring clinically about 0.8 cm in greatest diameter. The dermatologist (taxonomy: 208800000X - Dermatology) evaluates the lesion, reviews the biopsy confirming malignancy, documents lesion size, location, and intent to achieve clear margins, and obtains informed consent. On the day of service the patient is placed in a minor procedure room in an ambulatory surgical center. Local anesthetic is administered, and the provider performs an excision of the malignant lesion including appropriate margins with primary closure. Specimen is labeled and sent to pathology. Postoperative instructions and wound care are provided, and the visit is documented including lesion measurements, technique, margins planned and achieved, and any intraoperative findings.
This scenario corresponds to a procedure billed with 11621 for excision of a malignant lesion on the nose with a diameter between 0.6 and 1.0 cm, typically performed by dermatology in outpatient clinic or ambulatory surgery settings. Typical documentation includes lesion size, exact anatomic site, margin width, closure method, specimen handling, and pathology requisition details.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 |