ICD-10 Code H02.22 – Mechanical lagophthalmos (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.22 – Mechanical lagophthalmos
What it is
Mechanical lagophthalmos means the eyelids cannot close fully because a physical obstruction or distortion prevents normal closure. It is an eyelid problem, not a primary eye disease.
Clinical signs
Look for incomplete eyelid closure, especially on attempted blinking or sleep. Exposure-related findings such as dryness, irritation, tearing, or corneal exposure may be present; clinical features vary, refer to documentation.
When to use this code
Use H02.22 when the record states lagophthalmos is caused by a mechanical factor, such as eyelid scarring, mass effect, or structural deformity. Code it when the provider documents incomplete closure due to obstruction rather than nerve weakness. Check documentation if the cause is not clearly mechanical.
Do not use for
Do not use this code for paralytic lagophthalmos or other neurologic causes of eyelid weakness. If the chart only notes dry eye, eyelid swelling, or unspecified inability to close the eye, verify the diagnosis first.
Coding tip
Assign the mechanical cause first when documented, and use H02.22 only when the provider identifies mechanical lagophthalmos specifically.