Chronic angle-closure glaucoma, left eye, moderate stage

This code signifies a persistent form of angle-closure glaucoma affecting the left eye, characterized by a moderately advanced stage of optic nerve damage and visual field loss. It indicates a chronic condition where the iris blocks the drainage angle, leading to increased intraocular pressure over time.

Apply this code when documentation specifies chronic angle-closure glaucoma in the left eye, and the severity is explicitly noted as "moderate stage" based on objective findings such as visual field testing and optic nerve assessment. This code is appropriate for ongoing management and monitoring of the condition.

• Ensure the documentation clearly specifies "chronic" and "moderate stage" for the left eye.
• Distinguish from acute angle-closure glaucoma (H40.21-) and other types of glaucoma.
• Always sequence this code after any underlying systemic conditions contributing to the glaucoma, if applicable.