ICD-10 Code H26.3 – Drug-induced cataract (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H26.3 – Drug-induced cataract
What it is
H26.3 identifies cataract formation attributed to a medication or drug exposure. Use it when the record clearly links lens opacity to a drug effect.
Clinical signs
Clinical features vary; refer to documentation. Typical cataract findings may include blurred vision, glare, reduced contrast, and lens opacity noted on eye examination.
When to use this code
Use H26.3 when the provider documents a cataract caused by a drug, medication, or other pharmacologic exposure. The causal relationship should be stated in the chart, not assumed from history alone. If the note only says cataract without a drug link, check documentation.
Do not use for
Do not use this code for age-related, traumatic, congenital, or other non-drug cataracts. If the medication effect is not documented, choose the more specific documented cataract type or check documentation.
Coding tip
Assign H26.3 only when the provider explicitly documents drug-induced causation.