ICD-10 Code H44.443 – Primary hypotony of eye, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.443 – Primary hypotony of eye, bilateral
What it is
Use this code for abnormally low pressure in both eyes when the hypotony is primary, meaning it is not documented as a result of surgery, trauma, or another eye disorder. It describes the condition, not the cause.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include reduced intraocular pressure in both eyes and associated visual symptoms, but you should code only what is documented.
When to use this code
Use H44.443 when the provider documents primary hypotony affecting both eyes and does not identify a secondary cause. It may also apply when the note clearly states bilateral hypotony of unknown or primary origin. Check the record for laterality and etiology before assigning this code.
Do not use for
Do not use this code for hypotony caused by surgery, trauma, inflammation, or other specified eye conditions. If the documentation identifies a secondary cause, code the underlying condition instead.
Coding tip
Confirm that the record says both eyes and primary cause, because laterality and etiology drive correct code selection.