Primary hypotony of right eye

This code describes a condition where the intraocular pressure (IOP) in the right eye is abnormally low, not due to surgery, trauma, or inflammation. This primary hypotony can lead to visual impairment and other ocular complications.

Apply this code when documentation explicitly states "primary hypotony" affecting the right eye. This diagnosis is typically made after ruling out secondary causes of low IOP, such as surgical complications, ocular trauma, or uveitis.

• Ensure documentation specifies "primary" hypotony to differentiate from secondary causes.
• Verify the affected eye; this code is specific to the right eye. Use H44.442 for the left eye and H44.443 for bilateral involvement.
• Do not use this code if the hypotony is a direct result of a surgical procedure, trauma, or inflammatory process; instead, code the underlying cause.