ICD-10 Code C43.3 – Malignant Melanoma of Other and Unspecified Parts of Face (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C43.3 – Malignant melanoma of other and unspecified parts of face
What it is
C43.3 identifies a malignant melanoma located on other or unspecified parts of the face. Use it when the record documents melanoma of facial skin but does not specify a more exact facial site.
Clinical signs
Clinical features vary; refer to documentation. Melanoma may appear as a changing pigmented lesion, an irregularly bordered mole, or a new skin growth with asymmetry, color variation, or ulceration.
When to use this code
Use this code when the provider diagnoses malignant melanoma on the face and the note does not identify a more specific subsite such as eyelid, ear, or lip. It also fits pathology-confirmed melanoma recorded only as facial skin involvement. If the documentation names a different anatomic site, code that site instead.
Do not use for
Do not use C43.3 for benign nevi, dysplastic nevi, or non-melanoma skin cancers. Check documentation if the lesion is on a specific facial structure that has its own code.
Coding tip
Code the most specific documented facial site first; use C43.3 only when the face is stated but the precise location is not.