ICD-10 Code H21.8 – Other specified disorders of iris and ciliary body (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.8 – Other specified disorders of iris and ciliary body
What it is
Use this code for an iris or ciliary body disorder that is documented but does not fit a more specific ICD-10-CM category. It captures unusual or named conditions affecting these anterior segment structures.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visible iris or ciliary body abnormalities noted on eye examination, with symptoms such as blurred vision, pain, or photophobia depending on the condition.
When to use this code
Use H21.8 when the provider identifies a specific disorder of the iris or ciliary body and no more precise code is available. It is appropriate for documented conditions that are not classified elsewhere in the H21 category. If the record only says “eye disorder” or gives an uncertain diagnosis, check documentation before coding.
Do not use for
Do not use this code for uveitis, glaucoma, traumatic eye injuries, or nonspecific ocular symptoms without a documented iris or ciliary body disorder. Check documentation if the condition is better described by another eye code.
Coding tip
Assign H21.8 only after confirming the provider documented an “other specified” iris or ciliary body disorder and no more specific code applies.