Low-tension glaucoma, right eye, mild stage

This code signifies a form of primary open-angle glaucoma where optic nerve damage and visual field loss occur despite intraocular pressure (IOP) being consistently within the statistically normal range. It specifically identifies the condition affecting the patient's right eye and indicates that the disease progression is currently in a mild stage.

Apply this code when documentation confirms a diagnosis of low-tension glaucoma in the right eye, supported by characteristic optic nerve changes and visual field defects, with IOP measurements consistently below 21 mmHg. The "mild stage" designation should be explicitly stated or clearly inferred from clinical findings such as early visual field loss and minimal optic disc cupping.

• Ensure documentation specifies "low-tension" or "normal-tension" glaucoma, as this differentiates it from other primary open-angle glaucomas.
• Laterality (right eye) and the stage of glaucoma (mild) are integral to this specific code; verify these details are clearly documented.
• Do not confuse with codes for primary open-angle glaucoma with elevated IOP (e.g., H40.11x) or other types of glaucoma.