Primary open-angle glaucoma, right eye, indeterminate stage

This code signifies primary open-angle glaucoma affecting the right eye, where the severity or stage of the disease cannot be precisely determined. This form of glaucoma is characterized by elevated intraocular pressure due to impaired aqueous humor outflow, leading to optic nerve damage and visual field loss. The "indeterminate stage" indicates that the extent of damage or progression is not yet quantifiable.

Use this code when the physician documents primary open-angle glaucoma in the right eye, but the specific stage (e.g., mild, moderate, severe) is not or cannot be determined. This often occurs during initial diagnosis or when comprehensive staging tests are pending or inconclusive. Documentation should clearly state "primary open-angle glaucoma, right eye, indeterminate stage" or similar phrasing.

• Ensure documentation specifies "primary open-angle glaucoma" and not another type of glaucoma.
• Verify the affected eye is the right eye; separate codes exist for the left eye and bilateral involvement.
• Only use "indeterminate stage" when a more specific stage cannot be assigned based on clinical findings.