ICD-10 Code H40.63 – Glaucoma secondary to drugs, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.63 – Glaucoma secondary to drugs, bilateral
What it is
This code describes glaucoma in both eyes caused by a medication or drug exposure. Use it when the record links the elevated eye pressure or optic nerve damage to a drug effect.
Clinical signs
Findings may include increased intraocular pressure, optic nerve cupping, and visual field loss. Clinical features vary; refer to documentation.
When to use this code
Use H40.63 when the provider documents bilateral glaucoma secondary to drugs, or clearly states a drug-induced cause affecting both eyes. Confirm that the condition is not simply glaucoma with a history of medication use. If the laterality or cause is unclear, check documentation.
Do not use for
Do not use this code for primary glaucoma without a documented drug cause. Do not use it when only one eye is affected or when the record does not support bilateral involvement.
Coding tip
Verify both the drug-related cause and bilateral laterality in the provider note before assigning H40.63.