ICD-10 Code H21.551 – Recession of chamber angle, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.551 – Recession of chamber angle, right eye
What it is
This code identifies a traumatic separation of the ciliary body from the iris root in the right eye’s anterior chamber angle. It is a structural eye injury that can affect aqueous outflow and later glaucoma risk.
Clinical signs
Findings may include a widened angle on gonioscopy, angle asymmetry, or evidence of prior blunt eye trauma. Clinical features vary; refer to documentation.
When to use this code
Use H21.551 when the record specifically documents recession of the chamber angle in the right eye. Apply it for confirmed traumatic angle recession, typically after ophthalmic examination or gonioscopic evaluation. If laterality is not stated, check documentation before coding.
Do not use for
Do not use this code for nonspecific glaucoma, ocular trauma without documented angle recession, or left-eye/bilateral findings. Check documentation if the note mentions suspected injury only.
Coding tip
Capture the laterality exactly as documented and code the associated injury if the record supports it.