Glaucoma secondary to drugs, left eye, indeterminate stage

This code signifies elevated intraocular pressure and optic nerve damage in the left eye, specifically caused by the use of certain medications. The stage of glaucoma progression is not yet definitively determined. This condition can lead to irreversible vision loss if not managed.

Apply this code when documentation clearly indicates glaucoma in the left eye is a direct consequence of drug therapy, and the specific stage of the disease cannot be precisely classified. This typically occurs when initial diagnosis is made, or when comprehensive staging tests have not yet been completed or are inconclusive. Supporting documentation includes physician notes detailing drug etiology and an indeterminate stage.

• Ensure the medical record explicitly states the drug as the causative agent for the glaucoma.
• Confirm that the left eye is specified and that the stage is documented as "indeterminate" or "unspecified."
• Do not use this code if the stage of glaucoma is clearly defined (e.g., mild, moderate, severe); instead, select the appropriate stage-specific code.