ICD-10 Code H40.30 – Glaucoma secondary to eye trauma, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.30 – Glaucoma secondary to eye trauma, unspecified eye
What it is
This code identifies glaucoma that develops after an eye injury, when the affected eye is not specified. Use it for trauma-related secondary glaucoma, not primary glaucoma.
Clinical signs
Findings may include elevated intraocular pressure, optic nerve damage, or visual field loss after ocular trauma. Clinical features vary; refer to documentation.
When to use this code
Use H40.30 when documentation states glaucoma is secondary to prior eye trauma and the record does not identify right or left eye. It also fits cases where the provider links glaucoma to an injury, such as blunt or penetrating trauma. Check documentation if the cause or laterality is unclear.
Do not use for
Do not use this code for primary glaucoma or for eye injury without documented glaucoma. If the chart specifies a right or left eye, use the laterality-specific code instead.
Coding tip
Confirm both the traumatic cause and the unspecified eye in the provider note before assigning H40.30.