ICD-10 Code H02.519 – Abnormal innervation syndrome unspecified eye, unspecified eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.519 – Abnormal innervation syndrome unspecified eye, unspecified eyelid
What it is
This code identifies an abnormal nerve supply affecting the eye or eyelid when the exact eye and eyelid side are not specified. Use it for documented innervation disorders without a more precise diagnosis.
Clinical signs
Clinical features vary; refer to documentation. You may see abnormal eyelid movement, synkinesis, or other nerve-related misdirection of eye or lid function.
When to use this code
Use this code when the record states abnormal innervation syndrome and does not identify the affected eye or eyelid. It also fits when laterality is unclear or the provider documents the condition only in general terms. Check documentation for any more specific ocular or eyelid diagnosis first.
Do not use for
Do not use this code for a clearly specified laterality or a different eyelid or ocular disorder. If the chart supports a more specific diagnosis, code that instead.
Coding tip
Confirm whether the provider documented the eye, eyelid, and side before assigning this unspecified code.