ICD-10 Code H02.422 – Myogenic Ptosis of Left Eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.422 – Myogenic ptosis of left eyelid
What it is
H02.422 identifies drooping of the left upper eyelid caused by a muscle problem. Use it when documentation states myogenic ptosis affecting the left eyelid.
Clinical signs
Typical findings include a visibly low left upper lid and reduced lid elevation from weakened levator function. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents myogenic ptosis limited to the left eyelid, such as congenital or acquired muscle-related droop. It is appropriate when laterality is clearly stated and the cause is muscular rather than neurologic or mechanical. Check documentation if the etiology is unclear.
Do not use for
Do not use H02.422 for ptosis of the right eyelid, both eyelids, or unspecified laterality. Do not use it when the droop is due to nerve palsy, trauma, or excess eyelid tissue.
Coding tip
Verify that “myogenic” and “left” are both documented before assigning H02.422.