Pigmentary glaucoma, bilateral, severe stage

This code signifies a diagnosis of pigmentary glaucoma affecting both eyes, characterized by a severe stage of the disease. Pigmentary glaucoma is a form of open-angle glaucoma where pigment granules from the iris are shed and obstruct the trabecular meshwork, leading to increased intraocular pressure and optic nerve damage.

Use this code when documentation explicitly states bilateral pigmentary glaucoma and specifies a severe stage. This typically applies to patients presenting with significant visual field loss, advanced optic nerve cupping, and persistently elevated intraocular pressure despite treatment. Supporting documentation would include ophthalmological examination findings, visual field tests, and optic nerve imaging.

• Ensure the documentation clearly specifies "bilateral" involvement and "severe stage" for accurate code assignment.
• Do not confuse with other types of glaucoma (e.g., primary open-angle glaucoma) or less severe stages.
• Always sequence this code after any underlying systemic conditions that may contribute to or be associated with glaucoma, if applicable.