Low-tension glaucoma, bilateral, stage unspecified

This code signifies a form of glaucoma characterized by optic nerve damage and visual field loss despite intraocular pressure (IOP) consistently remaining within the statistically normal range. It indicates that both eyes are affected, and the specific stage of the disease progression has not been documented or determined.

Use this code when documentation confirms a diagnosis of low-tension glaucoma affecting both eyes, and the physician has not specified the stage (e.g., mild, moderate, severe, indeterminate). This diagnosis is typically supported by optic nerve head changes, visual field defects, and normal IOP readings over time.

• Ensure documentation explicitly states "low-tension glaucoma" or "normal-tension glaucoma" for both eyes.
• If a specific stage (e.g., mild, moderate, severe) is documented for either eye, a more specific code from the H40.12 category should be used.
• Always review the medical record for laterality and stage to select the most precise code available.