ICD-10 Code H44.44 – Primary hypotony of eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.44 – Primary hypotony of eye
What it is
H44.44 identifies primary hypotony of the eye, meaning abnormally low intraocular pressure not caused by a recent procedure or another documented eye condition. Use it when the record specifically states primary hypotony.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may note a soft eye, shallow anterior chamber, or visual disturbance, but you should code only what is documented and supported by the provider.
When to use this code
Use H44.44 when the clinician documents primary hypotony as the diagnosis. It fits encounters focused on evaluation, monitoring, or follow-up of low intraocular pressure when no secondary cause is stated. If the note describes hypotony after surgery or another eye disorder, check documentation before coding.
Do not use for
Do not use this code for hypotony clearly linked to surgery, trauma, inflammation, or another underlying eye disease. If the record does not specify primary hypotony, check documentation.
Coding tip
Code H44.44 only when “primary” hypotony is explicitly documented; otherwise, verify whether a secondary cause should be reported instead.