Primary open-angle glaucoma, unspecified eye, mild stage

This code describes a form of glaucoma characterized by an open anterior chamber angle and damage to the optic nerve, resulting in visual field loss. In this specific instance, the stage of the disease is considered mild, and the affected eye is not specified in the clinical documentation.

Apply this code when documentation confirms a diagnosis of primary open-angle glaucoma, the disease severity is explicitly stated as mild, but the specific eye (right or left) is not documented. This code is appropriate when the physician's assessment indicates early-stage optic nerve damage and visual field defects consistent with mild glaucoma.

• Only use this code when the laterality (right or left eye) is truly unspecified in the medical record. If laterality is documented, a more specific code should be chosen.
• Ensure the documentation clearly supports "mild stage" glaucoma, often indicated by specific visual field defect criteria or optic nerve head changes.
• Do not confuse this with other types of glaucoma (e.g., secondary, normal tension) or unspecified glaucoma stages.