Primary hypotony of left eye

This code describes a condition where the intraocular pressure (IOP) in the left eye is abnormally low, without an identifiable secondary cause such as trauma, surgery, or inflammation. This primary hypotony can lead to visual impairment and other ocular complications if left untreated.

Use this code when documentation clearly indicates a diagnosis of hypotony specifically affecting the left eye, and no underlying cause (e.g., surgical complication, cyclodialysis cleft, uveitis) has been identified. This code is appropriate for idiopathic cases of low IOP in the left eye.

• Ensure laterality is accurately documented as "left eye" to support this specific code.
• Differentiate from secondary hypotony (H44.41-), which has an identifiable cause.
• Always review the patient's history for any previous ocular surgeries or trauma that might indicate a secondary cause.