ICD-10 Code H40.132 – Pigmentary glaucoma, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.132 – Pigmentary glaucoma, left eye
What it is
Pigmentary glaucoma, left eye, is a form of secondary open-angle glaucoma affecting the left eye. It occurs when released pigment blocks the eye’s drainage system and can raise intraocular pressure.
Clinical signs
Findings may include pigment dispersion in the anterior chamber, trabecular meshwork pigmentation, and glaucomatous optic nerve changes. Clinical features vary; refer to documentation.
When to use this code
Use H40.132 when the provider documents pigmentary glaucoma limited to the left eye. It applies when the diagnosis is established and laterality is specified in the record. If the note only says pigment dispersion syndrome or glaucoma without laterality, check documentation.
Do not use for
Do not use this code for pigmentary glaucoma of the right eye, bilateral disease, or unspecified eye. Also avoid it when the record describes pigment dispersion without confirmed glaucoma.
Coding tip
Verify both the glaucoma type and laterality before assigning H40.132.