ICD-10 Code C69.40 – Malignant neoplasm of unspecified ciliary body (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.40 – Malignant neoplasm of unspecified ciliary body
What it is
C69.40 identifies a malignant tumor in the ciliary body of the eye when the side is not specified. Use it for documented cancer of this ocular structure without laterality details.
Clinical signs
Clinical features vary; refer to documentation. Patients may have visual disturbance, eye pain, or an abnormal ocular exam, but the record should confirm a malignant ciliary body neoplasm.
When to use this code
Use this code when the provider documents malignant neoplasm of the ciliary body and does not specify right or left eye. It also fits when the chart confirms the site but laterality is unavailable or unclear. Check documentation if the lesion is described only as an iris, choroidal, or unspecified intraocular tumor.
Do not use for
Do not use C69.40 for benign, uncertain, or metastatic eye lesions unless the record clearly states a malignant ciliary body primary. Do not use it when laterality is documented and a more specific code applies.
Coding tip
Verify both malignancy and site; if laterality is missing, C69.40 is appropriate only after you confirm the ciliary body is the documented primary location.