Glaucoma secondary to drugs, unsp eye, stage unspecified

This code signifies an elevation of intraocular pressure (IOP) and optic nerve damage resulting from the use of a pharmaceutical agent. The specific drug causing the glaucoma is not identified, and the affected eye and disease stage are also unspecified. This condition can lead to irreversible vision loss if not managed.

Use this code when documentation clearly states "drug-induced glaucoma" but does not specify the causative drug, the affected eye (e.g., left, right, bilateral), or the stage of the glaucoma. This code is appropriate when the physician's notes indicate that the glaucoma is a secondary effect of medication, and further details are absent.

• Avoid using this code if the specific drug, affected eye, or stage of glaucoma is documented; instead, choose a more specific H40.6x code.
• Always sequence the drug-induced glaucoma code first, followed by an external cause code (T36-T50) to identify the drug if known.
• Query the provider for clarification on the specific drug, affected eye, and stage if possible to allow for more precise coding.