Primary angle closure without glaucoma damage, right eye

This code signifies a condition where the drainage angle of the right eye is anatomically narrow or closed, leading to an increased risk of acute angle-closure glaucoma. Crucially, there is no evidence of optic nerve damage or visual field loss typically associated with established glaucoma. It represents a pre-glaucomatous state.

Use this code when documentation confirms primary angle closure in the right eye, but specifically states that there is no glaucomatous damage. This often occurs during routine ophthalmic examinations or when a patient presents with symptoms suggestive of angle closure, but subsequent evaluation rules out optic neuropathy. Documentation should clearly indicate "without glaucoma damage."

• Do not use this code if any glaucomatous optic neuropathy or visual field defects are present; instead, code to a specific glaucoma type.
• Distinguish carefully between primary angle closure (H40.0x) and secondary angle closure (H40.1x).
• Ensure laterality is accurately documented and coded (right eye, left eye, bilateral, or unspecified).