ICD-10 Code H21.273 – Miotic pupillary cyst, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.273 – Miotic pupillary cyst, bilateral
What it is
H21.273 identifies a bilateral miotic pupillary cyst, meaning cystic lesions are present on both pupils. Use it when documentation specifically names this eye finding.
Clinical signs
Clinical features vary; refer to documentation. Typical notes may describe visible cysts at the pupillary margin or changes seen on eye examination in both eyes.
When to use this code
Use this code when the provider documents miotic pupillary cysts affecting both eyes, or records a bilateral pupillary cyst diagnosis. It is appropriate for ophthalmology visits, consults, or problem lists when the condition is the stated reason for care. Check documentation if laterality is unclear.
Do not use for
Do not use this code for a unilateral pupillary cyst or for nonspecific iris or anterior chamber cysts. If the record does not confirm bilateral involvement, check documentation.
Coding tip
Verify both the lesion type and laterality in the ophthalmology note before assigning H21.273.