CPT Code Overview

CPT code 11620 describes the excision of a malignant lesion, including margins, from areas such as the scalp, neck, hands, feet, or genitalia. This procedure is classified as a surgical dermatologic intervention and is typically performed in an ambulatory surgical center or office setting. The excision is a critical step in the management of skin cancers and other malignant lesions, ensuring complete removal and reducing the risk of recurrence. The procedure is commonly utilized by specialists in dermatology, surgery, and family medicine.

Clinical Context

A patient presents to a dermatology or surgical clinic with a suspicious skin lesion located on the scalp, neck, hands, feet, or genitalia. After clinical evaluation and possible biopsy, the lesion is diagnosed as malignant, such as malignant melanoma or Merkel cell carcinoma. The provider determines that surgical excision is necessary to remove the lesion, including appropriate margins to ensure complete removal. The procedure is typically performed in an ambulatory surgical center or office setting. Post-excision, the wound may require closure, and pathology is used to confirm clear margins. The workflow may involve preoperative assessment, excision, wound management, and follow-up for pathology results and further care as needed.

Coding Specifications

• Modifier 59: Used to indicate a distinct procedural service, such as when multiple lesions are excised in separate anatomical locations or when the excision is performed in conjunction with another unrelated procedure.

• Modifier 51: Used to denote multiple procedures performed during the same session, such as excision of more than one malignant lesion.

• Dermatology: Specialists in skin diseases and procedures.
• MOHS-Micrographic Surgery: Providers trained in advanced skin cancer excision techniques.
• Family Medicine: General practitioners who may perform minor skin procedures.
• Surgery: Surgeons with expertise in excision and wound management.

Related Diagnoses

• C43.4: Malignant melanoma of scalp and neck

  • Relevant for excision of melanoma located on the scalp or neck.

• C43.60: Malignant melanoma of unspecified upper limb, including shoulder

  • Used when the malignant lesion is on the upper limb or shoulder, but the exact side is not specified.

• C43.61: Malignant melanoma of right upper limb, including shoulder

  • Indicates melanoma on the right upper limb or shoulder; excision may be performed on the hand.

• C43.62: Malignant melanoma of left upper limb, including shoulder

  • Indicates melanoma on the left upper limb or shoulder; excision may be performed on the hand.

• C43.70: Malignant melanoma of unspecified lower limb, including hip

  • Used for melanoma on the lower limb or hip, side unspecified; excision may be performed on the foot.

• C43.71: Malignant melanoma of right lower limb, including hip

  • Indicates melanoma on the right lower limb or hip; excision may be performed on the foot.

• C43.72: Malignant melanoma of left lower limb, including hip

  • Indicates melanoma on the left lower limb or hip; excision may be performed on the foot.

• C4A.4: Merkel cell carcinoma of scalp and neck

  • Relevant for excision of Merkel cell carcinoma located on the scalp or neck.

• C4A.51: Merkel cell carcinoma of anal skin

  • Used for excision of Merkel cell carcinoma on the anal skin, which may be considered part of the genitalia for coding purposes.

Related CPT Codes

• 11621: Excision, malignant skin lesion, face, ears, eyelids, nose, lips; excised diameter 0.6 to 1.0 cm.

  • Used for excision of malignant lesions in facial areas; similar workflow but different anatomical site.

• 12051: Layer closure of wounds of face, ears, eyelids, nose, lips; 2.5 cm or less.

  • Often used in conjunction with excision codes when layered closure is required after lesion removal.

• 17000: Destruction of premalignant lesions.

  • Alternative to excision for premalignant lesions; not used for malignant lesions.

• 11102: Tangential biopsy of skin; single lesion.

  • Used prior to excision for diagnostic purposes; may be performed to confirm malignancy before proceeding with excision.

Codes 12051 and 11102 are commonly used together with excision codes in a clinical workflow, while 17000 is an alternative for non-malignant lesions. 11621 is an alternative for excision in different anatomical sites.

Medicare's national mean rate for CPT code 11620 is $205.94, which is slightly below the BUCA (average commercial) mean rate of $208.14. Commercial payers such as UnitedHealth Group and Cigna have notably higher mean rates, at $287.91 and $262.40 respectively, compared to both Medicare and BUCA.

Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies significantly across payers. Medicare exhibits the tightest range at $22.00, indicating relatively consistent reimbursement rates. In contrast, UnitedHealth Group shows the widest dispersion at $171.00, reflecting greater variability in commercial rates. Blue Cross Blue Shield and Cigna also display substantial ranges, at $93.00 and $154.00 respectively.

The table and chart below present a detailed breakdown of national benchmarks for each payer, including mean rates and percentile values.