Low-tension glaucoma, left eye, stage unspecified

This code signifies a diagnosis of low-tension glaucoma affecting the left eye, where the specific stage of the disease has not been documented or determined. Low-tension glaucoma is a form of open-angle glaucoma characterized by optic nerve damage and visual field loss despite intraocular pressure (IOP) remaining within the statistically normal range.

This code is appropriate when a patient presents with confirmed low-tension glaucoma in the left eye, but the ophthalmologist's documentation does not specify the stage (e.g., mild, moderate, severe, indeterminate). It should be used when the clinical findings (e.g., optic nerve cupping, visual field defects) are consistent with glaucoma, but IOP readings are consistently within normal limits.

• Ensure documentation clearly specifies "low-tension" or "normal-tension" glaucoma and laterality (left eye).
• Avoid using this code if a specific stage of glaucoma (e.g., mild, moderate, severe) is documented; instead, select the appropriate stage-specific code.
• Always review the entire encounter note for any mention of glaucoma stage before defaulting to "stage unspecified."