ICD-10 Code H02.021 – Mechanical entropion of right upper eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.021 – Mechanical entropion of right upper eyelid
What it is
This code identifies inward turning of the right upper eyelid caused by a mechanical factor, such as scarring, swelling, or a mass. The lid margin rubs against the eye surface.
Clinical signs
Typical findings include eyelid inversion, foreign-body sensation, tearing, redness, and corneal irritation. Clinical features vary; refer to documentation.
When to use this code
Use H02.021 when the record clearly states mechanical entropion affecting the right upper eyelid. You should code it when the cause is documented as structural or external rather than age-related or spastic.
Confirm laterality and eyelid location in the note. If the provider only documents entropion without cause or side, check documentation before assigning this code.
Do not use for
Do not use this code for left or unspecified eyelid entropion, or for congenital or involutional entropion unless documentation supports a mechanical cause.
Coding tip
Verify both the mechanical cause and the right upper eyelid before coding, because laterality and etiology drive correct selection.