ICD-10 Code H40.832 – Aqueous misdirection, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H40.832 – Aqueous misdirection, left eye
What it is
Aqueous misdirection is a rare glaucoma-related condition where fluid in the eye is diverted backward, causing shallowing of the anterior chamber and elevated eye pressure. This code specifies the left eye.
Clinical signs
Typical findings include a shallow anterior chamber, increased intraocular pressure, and blurred vision or ocular discomfort. Clinical features vary; refer to documentation.
When to use this code
Use H40.832 when the provider documents aqueous misdirection affecting the left eye. Apply it for confirmed diagnosis, postoperative or spontaneous cases, and when the note clearly identifies the left eye as involved.
Do not use for
Do not use this code for unspecified eye involvement or for other causes of glaucoma or shallow anterior chamber. Check documentation if the record does not clearly state aqueous misdirection.
Coding tip
Verify laterality in the assessment, since this code is eye-specific and should match the documented left eye.