Low-tension glaucoma, right eye, stage unspecified

This code signifies a diagnosis of primary open-angle glaucoma where the intraocular pressure (IOP) consistently remains within the statistically normal range, yet characteristic optic nerve damage and visual field loss are present in the right eye. The specific stage of the glaucoma progression is not documented or determined.

Apply this code when documentation confirms low-tension (or normal-tension) glaucoma affecting the right eye, and the physician has not specified the stage (e.g., mild, moderate, severe, indeterminate). This diagnosis is typically made after ruling out other causes of optic neuropathy and confirming IOP within normal limits despite glaucomatous changes.

• Ensure documentation explicitly states "low-tension" or "normal-tension" glaucoma and specifies the right eye.
• Do not use this code if the stage of glaucoma is documented; instead, select the appropriate stage-specific code (e.g., H40.1211-H40.1213).
• Always query the provider if the laterality or stage is unclear in the medical record.