ICD-10 Code H46.02 – Optic papillitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H46.02 – Optic papillitis, left eye
What it is
Optic papillitis is inflammation of the optic nerve head in the left eye. Use this code when documentation identifies papilledema-like optic disc inflammation limited to the left side.
Clinical signs
Typical findings include decreased visual acuity, color vision changes, and a swollen optic disc on exam. Clinical features vary; refer to documentation for laterality and whether the optic nerve head is specifically involved.
When to use this code
Use H46.02 when the provider documents optic papillitis affecting the left eye. It is appropriate when the record clearly distinguishes left-sided involvement from bilateral disease or unspecified optic neuritis. Check documentation if the note only says “optic neuritis” without laterality.
Do not use for
Do not use this code for right eye, bilateral, or unspecified optic nerve inflammation. Do not assign it when the documentation describes optic disc edema from another cause unless the provider states optic papillitis.
Coding tip
Verify laterality in the assessment and exam notes before coding, because optic nerve disorders are commonly documented without side specificity.