Mechanical lagophthalmos right upper eyelid

This code signifies an inability of the right upper eyelid to fully close due to a mechanical obstruction or restriction, rather than neurological impairment. This results in exposure of the ocular surface, potentially leading to dryness, irritation, and corneal damage.

Apply this code when documentation specifies mechanical lagophthalmos affecting the right upper eyelid. This typically occurs due to scarring, tumor, trauma, or surgical complications that physically impede eyelid closure. Supporting documentation should clearly indicate the mechanical nature and laterality.

• Differentiate from paralytic lagophthalmos (e.g., due to facial nerve palsy), which would be coded elsewhere.
• Always specify laterality (right, left, or bilateral) when documented.
• Look for underlying causes (e.g., scar, tumor) which may require additional codes.