ICD-10 Code C44.92 – Squamous cell carcinoma of skin, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.92 – Squamous cell carcinoma of skin, unspecified
What it is
C44.92 identifies a squamous cell carcinoma of the skin when the site is not specified. Use it for a malignant skin cancer diagnosis documented without a more exact location.
Clinical signs
Clinical features vary; refer to documentation. Skin lesions may be scaly, crusted, ulcerated, or enlarging, but you should code only when squamous cell carcinoma of skin is clearly documented.
When to use this code
Use C44.92 when the provider documents squamous cell carcinoma of the skin and does not name the body site. It is appropriate for pathology-confirmed or clinically diagnosed cases if the record remains unspecified. If laterality or anatomic site is documented, choose the more specific code instead.
Do not use for
Do not use this code for basal cell carcinoma, melanoma, or nonmalignant skin lesions. Do not use it when the site is known and a more specific code is available.
Coding tip
Check the pathology report and provider note for the exact skin site before assigning this unspecified code.