ICD-10 Code C44.209 – Unspecified malignant neoplasm of skin of left ear and external auricular canal (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.209 – Unspecified 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 when the record does not specify the exact skin site or histology. Use it for documented skin cancer of that anatomic area with unspecified type.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe a suspicious or confirmed malignant lesion, nonhealing growth, ulceration, bleeding, or a biopsy-proven skin cancer on the left ear or external auricular canal.
When to use this code
Use C44.209 when the provider documents a malignant neoplasm of the skin involving the left ear or external auricular canal and does not name a more specific site or type. It is appropriate for final diagnoses, pathology-confirmed skin cancer, or assessment notes that remain nonspecific. Check documentation if the lesion is described as deeper ear disease rather than skin.
Do not use for
Do not use this code for benign skin lesions, precancerous changes, or malignant disease clearly arising from a different ear structure. If the record specifies a different histology or site, code that documented diagnosis instead.
Coding tip
Confirm that the documentation says skin of the left ear or external auricular canal, because laterality and site detail drive this code.