ICD-10 Code C44.299 – Other specified malignant neoplasm of skin of left ear and external auricular canal (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.299 – Other specified malignant neoplasm of skin of left ear and external auricular canal
What it is
This code identifies a malignant skin tumor on the left ear or external ear canal that does not fit a more specific skin cancer category. Use it when the provider documents a specified malignant neoplasm of skin in that location.
Clinical signs
Findings may include a persistent skin lesion, nonhealing ulcer, crusting, bleeding, or a growing mass on the left ear region. Clinical features vary; refer to documentation.
When to use this code
Use C44.299 when the record clearly states a malignant neoplasm of skin involving the left ear or external auricular canal and no more specific code is documented. It may apply to pathology-confirmed or clinically diagnosed skin cancer. If the site or histology is unclear, check documentation.
Do not use for
Do not use this code for benign skin lesions, carcinoma in situ, or unspecified skin cancer sites. If the documentation names a different ear location or a more specific malignant skin diagnosis, code that instead.
Coding tip
Verify laterality and exact anatomic site in the pathology or provider note before assigning this code.