Low-tension glaucoma, left eye, indeterminate stage

This diagnosis code signifies a form of primary open-angle glaucoma where optic nerve damage and visual field loss occur despite intraocular pressure (IOP) consistently remaining within the statistically normal range. It specifically identifies the condition affecting the left eye, with the stage of the disease not yet definitively determined.

Use this code when documentation clearly indicates low-tension glaucoma affecting the left eye, and the ophthalmologist has not yet assigned a specific stage (e.g., mild, moderate, severe). This code is appropriate when the patient presents with characteristic optic nerve and visual field changes, but IOP measurements are consistently normal.

• Ensure documentation specifies "low-tension" or "normal-tension" glaucoma to differentiate from other open-angle types.
• Verify the affected eye (left) is clearly documented. If both eyes are affected, a bilateral code or separate codes for each eye may be necessary.
• Avoid using this code if a specific stage of glaucoma (e.g., mild, moderate, severe) has been determined and documented; instead, select the appropriate staged code.