Trichiasis without entropion left eye, unspecified eyelid

This code describes a condition where eyelashes on the left eye are misdirected inward, rubbing against the cornea or conjunctiva, without an inward turning of the eyelid margin itself. This inward growth of eyelashes can cause irritation, foreign body sensation, tearing, and potential corneal damage.

Use this code when documentation specifies trichiasis affecting the left eye, explicitly stating the absence of entropion and without further detail regarding the specific eyelid involved. This is appropriate for cases where the physician notes "trichiasis left eye, unspecified eyelid, no entropion."

• Differentiate carefully between trichiasis (misdirected eyelashes) and entropion (inward turning of the eyelid margin), as they are distinct conditions.
• Ensure laterality (left eye) is clearly documented.
• Avoid using this code if a specific eyelid (e.g., upper or lower) is identified; instead, select the more precise code.