ICD-10 Code H47.313 – Coloboma of optic disc, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.313 – Coloboma of optic disc, bilateral
What it is
H47.313 identifies a congenital coloboma affecting both optic discs. It means part of the optic nerve head did not form normally, creating a structural defect seen on eye examination.
Clinical signs
Findings may include an abnormal, excavated, or enlarged optic disc in both eyes, with variable visual impairment. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents bilateral optic disc coloboma or a congenital defect of both optic discs. It is appropriate when the diagnosis is confirmed on ophthalmic examination or imaging. Check documentation if laterality is unclear.
Do not use for
Do not use H47.313 for isolated iris, chorioretinal, or eyelid colobomas. Do not assign it when the record describes another optic nerve disorder without a documented coloboma.
Coding tip
Verify that the note explicitly states bilateral optic disc involvement before assigning H47.313.