ICD-10 Code C69.02 – Malignant neoplasm of left conjunctiva (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.02 – Malignant neoplasm of left conjunctiva
What it is
This code identifies a malignant tumor arising in the conjunctiva of the left eye. Use it when documentation specifies cancer in the left conjunctival tissue.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include a visible conjunctival mass, redness, irritation, or a lesion noted on eye examination.
When to use this code
Use C69.02 when the provider documents primary malignancy of the left conjunctiva. It is also appropriate when pathology, operative notes, or specialist assessment confirms the site and laterality.
Code the documented left-sided conjunctival cancer rather than a nonspecific eye malignancy. If the record only says “eye cancer” or site is unclear, check documentation before assigning this code.
Do not use for
Do not use this code for benign conjunctival lesions, inflammatory conditions, or unspecified eye tumors. If the lesion is in another eye structure or laterality is not documented, check documentation.
Coding tip
Verify both the conjunctival site and left laterality in the final diagnosis, because unspecified or right-sided disease requires a different ICD-10-CM code.