ICD-10 Code H26.9 – Unspecified Cataract (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H26.9 – Unspecified cataract
What it is
H26.9 identifies cataract when the lens is cloudy but the documentation does not specify the type or cause. Use it for an unspecified lens opacity affecting vision.
Clinical signs
Common findings include blurred or cloudy vision, glare, halos, and reduced visual acuity. Clinical features vary; refer to documentation.
When to use this code
Use H26.9 when the provider documents cataract without naming a subtype, such as nuclear, cortical, or posterior subcapsular. It also fits when the record confirms cataract but does not provide enough detail for a more specific code. Check documentation if laterality or etiology is stated elsewhere.
Do not use for
Do not use this code when the cataract type is documented more specifically or when the condition is congenital. Do not assign it if another eye disorder better explains the visual change.
Coding tip
Query for cataract type and laterality before defaulting to H26.9.