ICD-10 Code C69 – Malignant neoplasm of eye and adnexa (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69 – Malignant neoplasm of eye and adnexa
What it is
C69 identifies a malignant tumor arising in the eye or nearby adnexal structures. Use it when the record documents cancer of the eye, orbit, eyelid, lacrimal structures, or related adnexa and no more specific site is given.
Clinical signs
Clinical features vary by location, but may include a visible mass, distortion of eye structures, pain, reduced vision, or proptosis. Confirm the diagnosis and exact anatomic site in the pathology report or provider documentation.
When to use this code
Use C69 when the clinician documents a malignant neoplasm involving the eye or adnexa and the chart does not provide a more specific subsite code. It is also appropriate when the site is known only broadly as eye and adnexa. If the record names a specific structure, code that site instead.
Do not use for
Do not use C69 for benign or in situ lesions, or for tumors outside the eye and adnexa. If documentation is unclear about malignancy or the exact site, check documentation before coding.
Coding tip
Always code to the most specific anatomic site documented, and query the provider if the record only says “eye cancer.”