ICD-10 Code H40.059 – Ocular hypertension, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.059 – Ocular hypertension, unspecified eye
What it is
Use this code for elevated intraocular pressure documented in an unspecified eye without a confirmed glaucoma diagnosis. It describes ocular hypertension when laterality is not stated.
Clinical signs
Findings typically include increased eye pressure on examination, often without optic nerve damage or visual field loss. Clinical features vary; refer to documentation.
When to use this code
Assign H40.059 when the provider documents ocular hypertension and does not specify right, left, or bilateral eye. Use it for follow-up visits or evaluation of raised intraocular pressure when glaucoma has not been diagnosed.
Check documentation if the record mentions glaucoma suspects, secondary causes, or a specific eye, because those details may require a different code.
Do not use for
Do not use this code for confirmed glaucoma, secondary ocular hypertension with a stated cause, or laterality that is documented elsewhere. Check documentation.
Coding tip
Always verify laterality and whether glaucoma is diagnosed before selecting H40.059.