ICD-10 Code H40.33 – Glaucoma secondary to eye trauma, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.33 – Glaucoma secondary to eye trauma, bilateral
What it is
This code identifies glaucoma that develops because of prior trauma to both eyes. Use it when the record clearly links elevated intraocular pressure or glaucomatous damage to eye injury.
Clinical signs
Findings may include increased intraocular pressure, optic nerve damage, or visual field loss after ocular trauma. Clinical features vary; refer to documentation.
When to use this code
Use H40.33 when the provider documents glaucoma as secondary to trauma affecting both eyes. It fits cases where the traumatic event is the cause of the glaucoma, not a separate primary glaucoma diagnosis. Check documentation if the laterality or causal link is unclear.
Do not use for
Do not use this code for primary glaucoma, unilateral traumatic glaucoma, or a history of eye injury without current glaucoma. If the record does not specify bilateral involvement, check documentation.
Coding tip
Verify that the note states both trauma-related causation and bilateral involvement before assigning H40.33.