ICD-10 Code H40.24 – Residual stage of angle-closure glaucoma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.24 – Residual stage of angle-closure glaucoma
What it is
Use this code for the residual stage after an angle-closure glaucoma episode, when the acute event has passed but lasting glaucomatous damage remains. It indicates chronic sequelae rather than an active attack.
Clinical signs
Typical findings include optic nerve damage, visual field loss, and a history of angle closure. Clinical features vary; refer to documentation.
When to use this code
Assign H40.24 when the record clearly states residual stage of angle-closure glaucoma or documents persistent damage after prior angle closure. Use it for follow-up visits describing stable sequelae, not an acute emergency. Check documentation if the stage is unclear.
Do not use for
Do not use this code for acute angle-closure glaucoma, suspected glaucoma, or other glaucoma types. If the note describes active symptoms or another stage, choose the documented condition instead.
Coding tip
Look for explicit wording such as “residual stage” or “post-angle-closure changes” before assigning the code.