Summary & Overview
CPT 11600: Excision of Malignant Skin Lesion, 0.5 cm or Less
CPT code 11600 represents the excision of a malignant skin lesion, including margins, on the trunk, arms, or legs, with an excised diameter of 0.5 cm or less. This code is widely used in dermatology and family medicine practices for minor surgical removal of cancerous skin lesions. Its national relevance stems from the high prevalence of skin cancer and the need for precise coding to ensure appropriate reimbursement and clinical documentation.
Major payers covering this procedure include Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare. The publication provides an overview of payer coverage, typical clinical settings, and associated billing practices. Readers will gain insight into benchmarks for utilization, policy updates affecting reimbursement, and the clinical context for when this code is applied. The summary also highlights common modifiers and associated taxonomies relevant to dermatologic surgery, offering a comprehensive view of how 11600 fits into broader skin cancer management and billing workflows.
This article is designed for healthcare professionals, billing specialists, and policy analysts seeking a clear understanding of the clinical and administrative aspects of CPT code 11600. It covers payer coverage, clinical context, and key billing considerations, supporting informed decision-making in medical practice and health policy.
CPT Code Overview
CPT code 11600 is used to report the excision of a malignant skin lesion, including margins, on the trunk, arms, or legs, where the excised diameter is 0.5 cm or less. This procedure is classified under surgical procedures on the skin (dermatologic surgery) and is typically performed in an office setting (POS 11). The code is essential for accurately documenting and billing minor excisions of malignant lesions, ensuring proper clinical reporting and reimbursement for dermatologic surgical services.
Clinical & Coding Specifications
Clinical Context
A patient presents to a dermatology or family medicine office with a suspicious skin lesion on the trunk, arm, or leg. After clinical evaluation and possible biopsy, the lesion is diagnosed as malignant, such as a cutaneous squamous cell carcinoma or other skin cancer. The provider determines that excision is necessary. The procedure involves surgically removing the malignant lesion, including appropriate margins, with the excised diameter measuring 0.5 cm or less. The excision is performed in an office setting, and the tissue is sent for pathology to confirm complete removal and diagnosis.
Coding Specifications
Common Modifiers:
| Modifier Code | Description | When Used |
|---|---|---|
59 | Distinct Procedural Service | Used when a procedure is distinct from others performed on the same day. |
51 | Multiple Procedures | Used when multiple procedures are performed during the same session. |
Associated Provider Taxonomies:
207N00000X- Dermatology207ND0101X- MOHS-Micrographic Surgery207Q00000X- Family Medicine
These taxonomies represent providers who commonly perform excision of malignant skin lesions.
Related Diagnoses
C4A.52–C4A.72- Data not available in the input.
The range C4A.52–C4A.72 is provided, but no descriptions are included. These codes are relevant for documenting malignant skin lesions on the trunk, arms, or legs, which are the clinical indications for excision using CPT code 11600. No further details are available.
Related CPT Codes
17260- Data not available in the input.
17260 is listed as a related CPT code, but no description is provided. It may be used in similar clinical workflows, such as destruction of malignant skin lesions, but further details are not available. No information is provided regarding codes commonly used together or as alternatives.
National Reimbursement Benchmarks
For CPT code 11600, the national mean rate for Medicare is $205.47, closely aligned with the BUCA (average commercial) mean rate of $205.08. Commercial payers such as UnitedHealth Group and Cigna have notably higher mean rates at $286.84 and $256.03, respectively, while Aetna is the lowest among the major payers at $133.59.
Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies significantly across payers. Medicare exhibits the tightest range at $23.00, indicating relatively consistent reimbursement rates. In contrast, UnitedHealth Group shows the widest dispersion at $170.33, reflecting greater variability in commercial rates. Cigna and Blue Cross Blue Shield also display substantial ranges, at $154.21 and $91.50, respectively.
The table and chart below present a detailed breakdown of national benchmarks for each payer, including mean rates and percentile values.
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