ICD-10 Code H21.222 – Degeneration of ciliary body, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.222 – Degeneration of ciliary body, left eye
What it is
This code identifies degenerative change affecting the ciliary body in the left eye. It is used when documentation specifically states left-sided ciliary body degeneration.
Clinical signs
Clinical features vary; refer to documentation. Findings may include structural or degenerative changes noted on ophthalmic examination or imaging, with the left eye specifically identified.
When to use this code
Use H21.222 when the provider documents degeneration of the ciliary body in the left eye. Code it when the diagnosis is confirmed and the laterality is clear in the record.
Do not assume laterality from context alone. If the note only says ciliary body degeneration without specifying the eye, check documentation before assigning this code.
Do not use for
Do not use this code for unspecified eye involvement or for other anterior segment disorders. Check documentation if the condition is described differently, such as inflammation or a mass.
Coding tip
Always verify that the left eye is explicitly documented before selecting H21.222.