Chronic angle-closure glaucoma, right eye, stage unspecified

This code signifies a persistent form of glaucoma in the right eye where the iris blocks the drainage angle, leading to increased intraocular pressure. The chronicity implies a long-standing or recurring nature of this angle-closure mechanism. The specific stage of the glaucoma's progression is not documented or determined.

Apply this code when documentation explicitly states chronic angle-closure glaucoma affecting the right eye, and the physician has not specified or determined the stage of the condition. This is appropriate for initial diagnoses or follow-up visits where staging information is absent. Supporting documentation would include ophthalmological exam notes detailing angle closure and elevated intraocular pressure in the right eye over time.

• Do not use if the stage of glaucoma (e.g., mild, moderate, severe, indeterminate) is documented; instead, select a more specific code.
• Ensure laterality is accurately documented; this code is specific to the right eye.
• Distinguish from acute angle-closure glaucoma, which has a sudden onset and different coding.