Chronic angle-closure glaucoma, right eye, mild stage

This code signifies a chronic form of angle-closure glaucoma affecting the right eye, characterized by a persistently narrow or closed anterior chamber angle. This condition leads to elevated intraocular pressure, which can damage the optic nerve and result in irreversible vision loss. The "mild stage" indicates early optic nerve damage with minimal visual field defects.

Use this code when documentation confirms chronic angle-closure glaucoma in the patient's right eye, and the severity is explicitly stated as "mild stage." Supporting documentation should include ophthalmological examination findings, such as gonioscopy results showing angle closure, tonometry readings, and visual field tests consistent with early damage.

• Ensure the laterality (right eye) and stage (mild) are clearly documented by the ophthalmologist.
• Distinguish from acute angle-closure glaucoma, which has a different code series.
• Code any associated complications, such as visual field defects, separately if documented.