Primary open-angle glaucoma, bilateral, indeterminate stage

This code signifies a chronic, progressive optic neuropathy characterized by an open anterior chamber angle and elevated intraocular pressure, affecting both eyes. The specific stage of the disease progression, which impacts the extent of optic nerve damage and visual field loss, has not yet been determined.

Use this code when documentation indicates primary open-angle glaucoma is present in both eyes, but the provider has not specified a stage (e.g., mild, moderate, severe, or advanced). This code is appropriate when initial diagnosis or ongoing management requires further assessment to determine the disease's severity.

• Ensure documentation explicitly states "bilateral" and "indeterminate stage" for accurate code assignment.
• Avoid using this code if a specific stage (e.g., H40.111- for mild, H40.112- for moderate) is documented for either eye.
• Sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when managing other conditions.