ICD-10 Code C44.399 – Other specified malignant neoplasm of skin of other parts of face (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.399 – Other specified malignant neoplasm of skin of other parts of face
What it is
This code identifies a malignant skin tumor on other parts of the face that does not fit a more specific facial skin cancer code. Use it when the provider documents a malignant neoplasm of facial skin outside the eyelid, nose, ear, lip, or other listed sites.
Clinical signs
Clinical features vary; refer to documentation. Skin cancer may appear as a nonhealing lesion, changing pigmented area, ulcer, or irregular growth on the face, but the diagnosis should be confirmed by the provider.
When to use this code
Use this code when the record states a malignant neoplasm of skin located on another part of the face and no more specific site is documented. It is appropriate for confirmed primary skin cancer of the facial skin when the lesion is not better classified elsewhere. Check documentation if the site or histology is unclear.
Do not use for
Do not use this code for benign skin lesions, carcinoma in situ, or uncertain skin growths. If the cancer involves a more specific facial site, use the more precise code instead.
Coding tip
Match the exact facial subsite in the note before assigning C44.399.