Mechanical lagophthalmos left eye, upper and lower eyelids

This code describes the inability of the upper and lower eyelids of the left eye to close completely due to a mechanical obstruction or structural abnormality. This incomplete closure leaves the ocular surface exposed, leading to potential dryness, irritation, and corneal damage.

This code is appropriate when documentation specifies mechanical lagophthalmos affecting both the upper and lower eyelids of the left eye. Clinical scenarios include facial nerve paralysis with structural changes, scarring from trauma or surgery, or tumor involvement preventing full lid closure. Documentation should clearly indicate the mechanical nature and laterality.

• Differentiate from paralytic lagophthalmos (H02.21-) or cicatricial lagophthalmos (H02.23-) if the cause is not purely mechanical.
• Ensure documentation specifies both upper and lower eyelids are affected; otherwise, a more general lagophthalmos code might be appropriate.
• Always confirm laterality (left eye) to avoid coding errors.