ICD-10-CM Billable Code

G43.B1

Ophthalmoplegic migraine, intractable

Clinical Classification Guidelines

Inclusion Terms

  • Ophthalmoplegic migraine, with refractory migraine

Medical Intelligence & Overview

Ophthalmoplegic migraine, also known as G43.B1 in medical coding, is a rare neurological condition characterized by severe headaches accompanied by paralysis of the eye muscles. When classified as intractable or refractory, it indicates that the migraine episodes are persistent and resistant to typical treatments. This condition primarily involves recurrent migraines with associated nerve palsy, leading to eye movement problems that can last for days or weeks. Understanding this condition is important for recognizing symptoms and seeking appropriate medical care.

Causes & Symptoms

Clinical Causes: The exact cause of ophthalmoplegic migraine is not fully understood, but it’s believed to involve inflammation or swelling of the nerves controlling eye movement, especially the third, fourth, or sixth cranial nerves. It may involve vascular or neurological abnormalities affecting the blood vessels and nerves in the brain or around the eye. Certain environmental or genetic factors might predispose some individuals to develop this condition. Triggers such as stress, hormonal changes, and certain foods could potentially provoke episodes in sensitive individuals.

Key Symptoms: Severe, pounding headache often localized around the eye or forehead. Double vision or abnormal eye movements occurring due to cranial nerve palsy. Pain around the eye, which may worsen with eye movement. Drooping eyelid or difficulty moving the affected eye. Sensitivity to light and sound during episodes. In some cases, nausea and vomiting are present due to the intensity of the headache.

Diagnostic & Treatment

Diagnosis Path: Diagnosing ophthalmoplegic migraine involves a thorough review of symptoms and medical history, along with neurological examinations. Imaging studies like MRI or CT scans are often performed to rule out other causes such as tumors, aneurysms, or infections. Since this condition is rare and symptoms can mimic other serious issues, a healthcare provider may also perform additional tests to confirm the diagnosis and assess the extent of nerve involvement.

Treatment Protocols: Medications such as pain relievers to control headache pain. Corticosteroids to reduce nerve inflammation, especially during acute episodes. Preventive medications to reduce the frequency and severity of attacks, such as certain anticonvulsants or blood pressure medications. Close monitoring and follow-up care to adjust treatment strategies as needed. In some cases, therapies aimed at nerve protection or reducing nerve swelling may be considered.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is G43.B1 a billable ICD-10 code?
Yes, G43.B1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report G43.B1?
Clinical documentation must specify the nature of Ophthalmoplegic migraine, intractable and any associated comorbidities for accurate reporting.

Cite this Clinical Reference