ICD-10 Code D03.30 – Melanoma in situ of unspecified part of face (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D03.30 – Melanoma in situ of unspecified part of face
What it is
This code identifies melanoma in situ located on the face when the exact facial site is not documented. “In situ” means the malignant cells are confined to the epidermis and have not invaded deeper tissue.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include a suspicious pigmented facial lesion with irregular borders, color variation, or change over time, confirmed by pathology as melanoma in situ.
When to use this code
Use this code when the provider documents melanoma in situ on the face but does not specify the exact subsite, such as cheek, nose, or forehead. It also fits pathology-confirmed in situ disease limited to an unspecified facial area. If the record names a more specific facial location, code that site instead.
Do not use for
Do not use D03.30 for invasive melanoma, because this code is limited to in situ disease. Do not use it when the documentation identifies a different body site or a more specific facial subsite.
Coding tip
Check pathology and the operative note for the exact facial location before selecting the unspecified code.