ICD-10 Code C69.0 – Malignant neoplasm of conjunctiva (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.0 – Malignant neoplasm of conjunctiva
What it is
C69.0 identifies a malignant tumor arising in the conjunctiva, the thin membrane covering the white of the eye and inner eyelids. Use it when the record documents primary cancer of this tissue.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a visible conjunctival mass, persistent redness, irritation, or a lesion that does not resolve with routine care.
When to use this code
Use C69.0 when the provider documents malignant neoplasm of the conjunctiva, including confirmed primary conjunctival cancer. It is also appropriate when pathology or specialist notes clearly identify the conjunctiva as the site of origin. Check documentation if the lesion is described only as suspicious or unspecified.
Do not use for
Do not use this code for benign conjunctival lesions, inflammatory disorders, or tumors arising from another eye structure. If the site is unclear or metastatic, check documentation.
Coding tip
Code the documented anatomic site exactly; conjunctival malignancy is not the same as eyelid or intraocular cancer.