ICD-10 Code H21.552 – Recession of chamber angle, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.552 – Recession of chamber angle, left eye
What it is
H21.552 identifies recession of the chamber angle in the left eye, a structural injury where the anterior chamber angle is torn or widened after blunt trauma. This code tells you the affected eye and laterality.
Clinical signs
Clinical features vary; refer to documentation. Common findings include a history of eye trauma and gonioscopic evidence of angle recession, which may be associated with later glaucoma risk.
When to use this code
Use this code when the provider documents recession of the chamber angle in the left eye, usually after examination or gonioscopy. It fits confirmed traumatic angle recession, even if the encounter is for follow-up or surveillance. Code the left eye specifically only when laterality is documented.
Do not use for
Do not use this code for unspecified eye injury, glaucoma alone, or angle-closure conditions without documented angle recession. Check documentation if the record does not clearly identify the left eye.
Coding tip
Verify that the note states chamber angle recession and laterality; if the eye is not specified, you cannot assign H21.552.