ICD-10 Code H02.226 – Mechanical lagophthalmos left eye, unspecified eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.226 – Mechanical lagophthalmos left eye, unspecified eyelid
What it is
This code identifies incomplete closure of the left eyelid caused by a mechanical problem, such as scarring, mass effect, or eyelid distortion. Use it when the record specifies the left eye but does not identify the exact eyelid.
Clinical signs
Typical findings include inability to fully close the left eye, visible eyelid retraction, and exposed cornea or conjunctiva. Clinical features vary; refer to documentation.
When to use this code
Use H02.226 when the provider documents mechanical lagophthalmos affecting the left eye and does not name the upper or lower eyelid. It fits cases where the cause is structural or mechanical rather than neurologic. Check documentation if the note only says “lagophthalmos” without laterality or mechanism.
Do not use for
Do not use this code for paralytic or spastic lagophthalmos, or when the right eye or both eyes are documented instead. If the eyelid involved is specified, code that more exact option.
Coding tip
Confirm laterality and whether the lagophthalmos is mechanical before assigning H02.226.