Pigmentary glaucoma, unspecified eye, mild stage

This code signifies a form of secondary open-angle glaucoma characterized by the dispersion of pigment granules from the iris, which then deposit in the anterior chamber structures, obstructing aqueous humor outflow. This specific diagnosis indicates a mild stage of the condition affecting an unspecified eye.

Apply this code when documentation confirms a diagnosis of pigmentary glaucoma, with the severity explicitly stated as mild, and when the affected eye (right or left) is not specified. Supporting documentation should include ophthalmological exam findings, such as pigment deposition on the corneal endothelium (Krukenberg's spindle), iris transillumination defects, and evidence of mild optic nerve damage or visual field loss consistent with early-stage glaucoma.

• Ensure the documentation explicitly states "mild stage" for pigmentary glaucoma; otherwise, a different severity code may be appropriate.
• Avoid using this code if the affected eye is specified (e.g., right or left); instead, select the appropriate laterality code.
• Do not confuse with primary open-angle glaucoma or other secondary glaucomas; the etiology must be pigment dispersion.