ICD-10 Code H40.53 – Glaucoma secondary to other eye disorders, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.53 – Glaucoma secondary to other eye disorders, bilateral
What it is
This code identifies glaucoma caused by another eye disorder in both eyes. Use it when the record shows secondary glaucoma affecting the right and left eyes, not primary glaucoma.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include elevated intraocular pressure, optic nerve damage, and visual field loss, with an underlying ocular condition documented as the cause.
When to use this code
Use H40.53 when the clinician documents bilateral glaucoma secondary to another eye disorder, such as inflammation, trauma, or lens-related disease. The record should clearly link the glaucoma to the underlying eye condition. If laterality or cause is unclear, check documentation before coding.
Do not use for
Do not use this code for primary glaucoma or for glaucoma not specified as secondary. Do not assign it when only one eye is affected or when the record does not identify an underlying eye disorder.
Coding tip
Confirm both the bilateral laterality and the documented cause before selecting H40.53.