ICD-10 Code H40.052 – Ocular hypertension, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.052 – Ocular hypertension, left eye
What it is
H40.052 identifies elevated intraocular pressure in the left eye without documented glaucomatous damage. Use it when the provider documents ocular hypertension specifically affecting the left eye.
Clinical signs
Clinical features vary; refer to documentation. Common findings include increased eye pressure on exam, with no recorded optic nerve damage or visual field loss consistent with glaucoma.
When to use this code
Use this code when the record clearly states ocular hypertension in the left eye. It is appropriate for follow-up visits, monitoring, or evaluation of elevated pressure when glaucoma has not been diagnosed. If both eyes are involved, check documentation for the correct laterality.
Do not use for
Do not use this code for glaucoma, suspected glaucoma, or elevated pressure without left-eye specificity. If the chart does not identify the eye, check documentation before assigning a unilateral code.
Coding tip
Confirm laterality and whether glaucoma is documented before coding H40.052.