Glaucoma secondary to eye trauma, right eye, severe stage

This code signifies elevated intraocular pressure and optic nerve damage in the right eye, directly resulting from a previous ocular injury. The condition has progressed to a severe stage, indicating significant visual field loss and/or optic disc cupping. It represents a specific form of secondary glaucoma where trauma is the causative factor.

Use this code when documentation clearly links glaucoma in the right eye to a history of eye trauma, such as a penetrating injury, blunt force, or chemical burn. The medical record must explicitly state the severity as "severe stage" based on objective findings like visual field testing and optic nerve examination. This code is appropriate for both acute and chronic presentations of post-traumatic glaucoma.

• Always code the underlying eye trauma (e.g., S05.xx) as the primary diagnosis, followed by this code.
• Ensure the documentation specifies "right eye" and "severe stage"; otherwise, an unspecified or different stage code may be more appropriate.
• Do not confuse with primary open-angle glaucoma (H40.1x) or other forms of secondary glaucoma not related to trauma.