ICD-10 Code C44.301 – Unspecified malignant neoplasm of skin of nose (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.301 – Unspecified malignant neoplasm of skin of nose
What it is
This code identifies a malignant skin tumor on the nose when the record does not specify the exact histology or subtype. Use it for documented skin cancer of the nasal skin, not deeper nasal structures.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may note a persistent nonhealing lesion, ulceration, crusting, bleeding, or a changing pigmented or raised area on the nose.
When to use this code
Use this code when the provider documents malignant neoplasm of the skin of the nose but does not identify a more specific skin cancer type. It also fits when the pathology or note confirms malignancy, yet the subtype remains unspecified. Check documentation if the lesion site is described only as nasal without skin involvement.
Do not use for
Do not use this code for benign nasal lesions, premalignant skin changes, or cancers arising from the nasal cavity or other non-skin nasal structures. Check documentation if the site or diagnosis is unclear.
Coding tip
Verify both the anatomic site and the documented malignancy type; if the record names a specific skin cancer, code that instead.