ICD-10 Code H44.442 – Primary hypotony of left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.442 – Primary hypotony of left eye
What it is
H44.442 identifies abnormally low pressure in the left eye when no secondary cause is documented. It is used for primary ocular hypotony affecting the left eye only.
Clinical signs
Findings may include a soft eye, shallow anterior chamber, and blurred vision. Clinical features vary; refer to documentation and the ophthalmology assessment.
When to use this code
Use this code when the record specifically documents primary hypotony of the left eye. It fits encounters where low intraocular pressure is the diagnosis and no other cause is stated. If the note names an underlying injury, surgery, or inflammation, code the documented condition instead.
Do not use for
Do not use it for hypotony of the right eye, both eyes, or unspecified eye. Do not use it when the chart documents a secondary cause or another eye disorder as the primary diagnosis.
Coding tip
Confirm laterality and whether the hypotony is documented as primary before assigning H44.442.