ICD-10 Code C69.9 – Malignant neoplasm of unspecified site of eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.9 – Malignant neoplasm of unspecified site of eye
What it is
C69.9 identifies a malignant tumor of the eye when the exact site is not documented. Use it when the record confirms eye cancer but does not specify the affected ocular structure.
Clinical signs
Clinical features vary; refer to documentation. Eye malignancies may present with visual changes, ocular discomfort, a visible mass, or abnormal findings on examination or imaging.
When to use this code
Use this code when the provider documents malignant neoplasm of the eye without naming the specific site, such as retina, choroid, or conjunctiva. It also applies when the available note is incomplete and the exact ocular location cannot be confirmed. Check documentation before assigning a more specific code.
Do not use for
Do not use C69.9 if the record identifies a specific eye site, because a more precise code may apply. Do not use it for benign lesions, inflammatory eye disease, or metastatic disease unless the documentation supports primary eye cancer.
Coding tip
If the site is unclear, query for the exact ocular location before defaulting to C69.9.