ICD-10 Code H02.413 – Mechanical ptosis of bilateral eyelids (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.413 – Mechanical ptosis of bilateral eyelids
What it is
Mechanical ptosis of bilateral eyelids means both upper eyelids droop because of a physical weight or mass effect, not a nerve or muscle disorder. The lids may partially cover the eyes and limit the visual field.
Clinical signs
Look for bilateral upper eyelid drooping with a heavy lid appearance or reduced palpebral fissure. Clinical features vary; refer to documentation for the underlying cause, such as excess skin, edema, or a mass.
When to use this code
Use H02.413 when the provider documents mechanical ptosis affecting both eyelids and the cause is structural or external. This code fits cases where the droop is due to tissue weight, swelling, or another local eyelid factor. Check documentation if the ptosis is congenital, neurogenic, or myogenic instead.
Do not use for
Do not use this code for ptosis caused by nerve injury, muscle weakness, or congenital eyelid droop. It is also inappropriate when only one eyelid is involved or when documentation does not specify a mechanical cause.
Coding tip
Confirm bilateral involvement and the documented mechanical cause before assigning H02.413.