ICD-10 Code D04.30 – Carcinoma in situ of skin of unspecified part of face (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D04.30 – Carcinoma in situ of skin of unspecified part of face
What it is
This code identifies a noninvasive skin cancer located on an unspecified part of the face. The abnormal cells are confined to the epidermis and have not invaded deeper tissue.
Clinical signs
Documentation may describe a suspicious facial lesion, such as a persistent scaly, crusted, or changing patch. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents carcinoma in situ of the skin and the exact facial subsite is not specified. It also fits cases where the lesion is confirmed on the face but the record does not name a more precise location. You should code from the documented anatomic site, not assume a specific facial area.
Do not use for
Do not use this code for invasive skin cancer, benign lesions, or carcinoma in situ at a different body site. Check documentation if the face location is not confirmed.
Coding tip
If the note names a more specific facial site, code that site instead of this unspecified facial code.