ICD-10 Code H47.321 – Drusen of optic disc, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.321 – Drusen of optic disc, right eye
What it is
H47.321 identifies drusen located in the optic disc of the right eye. These are calcified deposits in or on the optic nerve head, usually found incidentally and often without symptoms.
Clinical signs
Findings may include an elevated, lumpy optic disc with visible drusen on examination or imaging. Clinical features vary; refer to documentation, especially if visual field changes or pseudopapilledema are noted.
When to use this code
Use this code when the provider documents drusen of the optic disc specifically in the right eye. It is appropriate for confirmed optic disc drusen, including incidental discovery during eye examination or evaluation of optic nerve appearance. Code the right-eye laterality only when clearly documented.
Do not use for
Do not use this code for left-eye or bilateral optic disc drusen, or when the note only says “optic disc abnormality” without confirmation. Check documentation if the finding is uncertain or if another optic nerve disorder is the actual diagnosis.
Coding tip
Verify laterality and confirm the provider named optic disc drusen, not papilledema or another optic nerve condition.