Unspecified primary angle-closure glaucoma, moderate stage

This code signifies a diagnosis of primary angle-closure glaucoma where the specific type (e.g., acute, chronic, intermittent) is not documented, and the disease has progressed to a moderate stage. This condition involves elevated intraocular pressure due to obstruction of aqueous humor outflow, leading to optic nerve damage and vision loss.

Utilize this code when the physician's documentation confirms primary angle-closure glaucoma and specifies a moderate stage, but does not provide further detail regarding the specific clinical presentation (e.g., acute attack, chronic progression). Documentation should clearly indicate the stage of glaucoma based on visual field defects or optic nerve damage.

• Ensure documentation explicitly states "moderate stage" for accurate staging.
• Avoid using this code if the type of primary angle-closure glaucoma (e.g., acute, chronic, intermittent) is specified; instead, use the more specific code.
• Always sequence this code after any underlying systemic conditions contributing to the glaucoma, if applicable.