Residual stage of open-angle glaucoma, unspecified eye

This code signifies a chronic, irreversible stage of open-angle glaucoma where the disease process is no longer active, but structural damage to the optic nerve and visual field loss persist. It indicates that the patient has reached a stable, non-progressive state following treatment or natural progression, with residual effects of the condition.

Use this code when documentation clearly states "residual stage" or "end-stage" open-angle glaucoma, and the specific eye is not documented. This applies to patients with stable intraocular pressure and optic nerve damage from previously active open-angle glaucoma. Supporting documentation should confirm the inactive status of the disease.

• Do not use this code for active or progressive open-angle glaucoma; instead, use codes from H40.10-H40.14.
• Always attempt to specify the affected eye (right, left, or bilateral) if documented, using H40.151, H40.152, or H40.153.
• Code any associated blindness or low vision separately if present and documented.