ICD-10 Code H44.419 – Flat anterior chamber hypotony of unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.419 – Flat anterior chamber hypotony of unspecified eye
What it is
This code identifies hypotony with a flat anterior chamber in an unspecified eye. It indicates abnormally low intraocular pressure with shallowing or collapse of the front chamber of the eye.
Clinical signs
Findings may include a shallow or flat anterior chamber on exam, low intraocular pressure, and visual complaints. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents flat anterior chamber hypotony but does not specify the right or left eye. It fits postoperative, traumatic, or other documented hypotony only when the provider names this condition. If the eye is specified, code the laterality instead.
Do not use for
Do not use it for ocular hypotony without a flat anterior chamber, or for a condition affecting a specified eye when laterality is documented. Check documentation.
Coding tip
Confirm both the hypotony and the flat anterior chamber are documented before assigning H44.419.