ICD-10 Code H44.40 – Unspecified hypotony of eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.40 – Unspecified hypotony of eye
What it is
This code identifies abnormally low pressure inside the eye when the record does not specify the cause or whether the condition is acute or chronic. Use it when documentation simply states ocular hypotony.
Clinical signs
Findings may include a soft eye, reduced intraocular pressure, blurred vision, or shallow anterior chamber. Clinical features vary; refer to documentation.
When to use this code
Use H44.40 when the provider documents hypotony of the eye without further detail. It also fits cases where low eye pressure is noted, but the cause, laterality, or type is not specified in the record.
Do not use for
Do not use this code if the chart identifies a specific cause of hypotony or another more precise eye disorder. Check documentation before assigning a nonspecific code.
Coding tip
If the note lacks detail, query for cause and laterality before defaulting to H44.40.