ICD-10 Code H40.243 – Residual stage of angle-closure glaucoma, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.243 – Residual stage of angle-closure glaucoma, bilateral
What it is
This code identifies residual-stage angle-closure glaucoma affecting both eyes. It means the acute or active phase has passed, but chronic glaucomatous damage or ongoing follow-up remains.
Clinical signs
Find documentation of bilateral angle-closure disease with residual optic nerve or visual field changes. Clinical features vary; refer to documentation for evidence of prior angle closure and current chronic findings.
When to use this code
Use this code when the provider documents residual stage of angle-closure glaucoma in both eyes. It fits follow-up visits after an angle-closure episode when the condition is no longer acute but still clinically relevant. If the record only says glaucoma without stage or laterality, check documentation.
Do not use for
Do not use it for acute angle-closure glaucoma, unspecified glaucoma, or open-angle glaucoma. If the note does not clearly state bilateral residual angle-closure disease, verify the diagnosis first.
Coding tip
Code laterality and stage exactly as documented; residual-stage wording is essential for H40.243.