ICD-10 Code H02.23A – Paralytic lagophthalmos right eye, upper and lower eyelids (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.23A – Paralytic lagophthalmos right eye, upper and lower eyelids
What it is
This code identifies paralysis-related inability to close the right eye when both the upper and lower eyelids are affected. It reflects lagophthalmos caused by eyelid weakness, not simple eyelid swelling or cosmetic asymmetry.
Clinical signs
Typical findings include incomplete eyelid closure on the right, visible sclera during attempted closure, and exposure of the ocular surface. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents paralytic lagophthalmos of the right eye involving both upper and lower eyelids. It is appropriate when the cause is nerve or muscle paralysis and the laterality is specified. Check documentation if the note only says “lagophthalmos” without paralysis or eye side.
Do not use for
Do not use this code for left eye, bilateral, or unspecified lagophthalmos. It also should not be used for nonparalytic eyelid malposition or nonspecific eye irritation without documented eyelid paralysis.
Coding tip
Confirm both laterality and paralytic cause in the provider note before assigning H02.23A.