ICD-10 Code G43.B0 – Ophthalmoplegic migraine, not intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.B0 – Ophthalmoplegic migraine, not intractable
What it is
This code identifies ophthalmoplegic migraine, a rare condition with migraine-like headache and temporary weakness of one or more eye-movement nerves. Use it when the record specifies the disorder is not intractable.
Clinical signs
Typical findings include unilateral headache with eye pain, double vision, drooping eyelid, or limited eye movement. Clinical features vary; refer to documentation.
When to use this code
Use G43.B0 when the provider documents ophthalmoplegic migraine and states it is not intractable. It may also be appropriate when the note clearly describes recurrent migraine episodes with associated ocular motor nerve palsy and no mention of intractability.
Do not use for
Do not use this code for ordinary migraine without ophthalmoplegia, or when the chart does not support cranial nerve involvement. Check documentation.
Coding tip
Confirm both the ophthalmoplegic migraine diagnosis and the “not intractable” wording in the provider note before assigning G43.B0.