Hypersecretion glaucoma, unspecified eye

This code describes a type of glaucoma characterized by an overproduction of aqueous humor, leading to elevated intraocular pressure (IOP) and potential optic nerve damage. Unlike most glaucomas where outflow is impaired, hypersecretion glaucoma involves an imbalance due to excessive fluid generation within the eye. This specific code indicates that the affected eye is not specified in the documentation.

Use this code when documentation clearly states a diagnosis of hypersecretion glaucoma, and the medical record does not specify whether it affects the right, left, or both eyes. This diagnosis is typically supported by elevated IOP readings, visual field defects, and optic nerve changes, with the underlying mechanism identified as hypersecretion.

• Avoid using this code if the affected eye (right, left, or bilateral) is documented; instead, use the more specific codes (H40.821, H40.822, H40.823).
• Ensure the documentation explicitly states "hypersecretion glaucoma" rather than other forms of glaucoma.
• Code any associated complications, such as visual field defects or optic nerve atrophy, as secondary diagnoses.