Glaucoma secondary to drugs, right eye, severe stage

This code signifies a severe stage of glaucoma affecting the right eye, specifically induced as a secondary effect of drug therapy. This condition involves elevated intraocular pressure leading to optic nerve damage and visual field loss, directly attributable to medication use.

Apply this code when documentation clearly indicates drug-induced glaucoma in the right eye has progressed to a severe stage. This typically involves significant visual field loss, advanced optic nerve cupping, and confirmed medication as the causative agent.

• Ensure documentation specifies "right eye" and "severe stage" for accurate code assignment.
• Always code the underlying drug causing the glaucoma as an adverse effect (T36-T50 with a 5th or 6th character of 5).
• Distinguish from primary open-angle glaucoma or other secondary glaucomas not drug-induced.