ICD-10 Code H44.4 – Hypotony of eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.4 – Hypotony of eye
What it is
Hypotony of eye means abnormally low pressure inside the eye. You use this code when documentation identifies ocular hypotony, usually as a diagnosis rather than a symptom.
Clinical signs
Clinical features may include a soft eye, shallow anterior chamber, or reduced visual function. Clinical features vary; refer to documentation.
When to use this code
Use H44.4 when the provider documents hypotony, ocular hypotony, or low intraocular pressure as the condition being treated or evaluated. It may appear after eye surgery, trauma, or inflammation, but you should code only what is documented. If the note names an underlying cause, code that condition as well when instructed.
Do not use for
Do not use this code for normal low-pressure readings without a diagnosis. Do not substitute it for other eye disorders or for postoperative states unless hypotony is specifically documented.
Coding tip
Check the note for the cause of hypotony and code the underlying eye condition when documented.