ICD-10 Code C43.52 – Malignant melanoma of skin of breast (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C43.52 – Malignant melanoma of skin of breast
What it is
This code identifies a malignant melanoma arising in the skin of the breast. It refers to a cancerous pigment-producing skin tumor, not a tumor of the breast tissue itself.
Clinical signs
Clinical features vary; refer to documentation. Commonly, melanoma presents as a changing pigmented lesion, irregular border, uneven color, or a new skin growth that may bleed, itch, or enlarge.
When to use this code
Use this code when the provider documents malignant melanoma located on the skin of the breast. It applies to primary cutaneous melanoma of that site, including pathology-confirmed cases. Verify laterality and exact anatomic site if the record is specific.
Do not use for
Do not use this code for benign skin lesions, non-melanoma skin cancers, or melanoma metastatic to the breast skin from another primary site. Check documentation if the lesion is in breast tissue rather than skin.
Coding tip
Code from the pathology or final provider diagnosis and confirm the lesion is on the breast skin, not the breast parenchyma.