ICD-10 Code C69.00 – Malignant neoplasm of unspecified conjunctiva (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.00 – Malignant neoplasm of unspecified conjunctiva
What it is
C69.00 identifies a malignant tumor of the conjunctiva when the site is not further specified. Use it when documentation confirms conjunctival cancer but does not state the exact conjunctival location.
Clinical signs
Clinical features vary; refer to documentation. Conjunctival malignancy may present as a visible ocular surface lesion, irritation, redness, or growth noted on examination, but coding should follow the recorded diagnosis.
When to use this code
Use C69.00 when the provider documents malignant neoplasm of the conjunctiva and does not identify a more specific conjunctival site. It is appropriate for confirmed primary conjunctival cancer when laterality or subsite is not stated. If the record names a precise conjunctival location, code that more specific option instead.
Do not use for
Do not use this code for benign conjunctival lesions, dysplasia, or nonconjunctival eye tumors. If the documentation specifies a different eye structure or a more exact conjunctival site, check documentation and select the correct code.
Coding tip
Before assigning C69.00, look for laterality and a more specific conjunctival subsite in the operative note, pathology report, or assessment.