ICD-10 Code H47.312 – Coloboma of optic disc, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.312 – Coloboma of optic disc, left eye
What it is
H47.312 identifies a congenital defect of the left optic disc. The optic disc is partially missing or malformed, creating a coloboma that affects the eye’s normal structure.
Clinical signs
Findings may include an abnormal optic disc appearance on eye exam, reduced visual acuity, or visual field defects. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents coloboma of the optic disc in the left eye. It is appropriate for congenital optic nerve disc malformation confirmed by ophthalmologic examination or imaging. Code the documented laterality exactly as stated.
Do not use for
Do not use it for unspecified optic disc anomalies or coloboma in the right eye or both eyes. Check documentation if the record only mentions a general coloboma without optic disc or laterality detail.
Coding tip
Verify laterality and that the defect is specifically the optic disc before assigning H47.312.