ICD-9 Diagnosis Code 346.20

Vrnt mgrn wo ntr mgr NEC

Diagnosis Code 346.20

ICD-9: 346.20
Short Description: Vrnt mgrn wo ntr mgr NEC
Long Description: Variants of migraine, not elsewhere classified, without mention of intractable migraine without mention of status migrainosus
This is the 2014 version of the ICD-9-CM diagnosis code 346.20

Code Classification
  • Diseases of the nervous system
    • Other disorders of the central nervous system (340-349)
      • 346 Migraine

Information for Medical Professionals

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Abdominal migraine
  • Allergic migraine
  • Atypical cluster headache
  • Ciliary neuralgia
  • Migraine variants
  • Migraine variants, not intractable

Information for Patients


If you suffer from migraine headaches, you're not alone. About 12 percent of the U.S. population gets them. Migraines are recurring attacks of moderate to severe pain. The pain is throbbing or pulsing, and is often on one side of the head. During migraines, people are very sensitive to light and sound. They may also become nauseated and vomit.

Migraine is three times more common in women than in men. Some people can tell when they are about to have a migraine because they see flashing lights or zigzag lines or they temporarily lose their vision.

Many things can trigger a migraine. These include

  • Anxiety
  • Stress
  • Lack of food or sleep
  • Exposure to light
  • Hormonal changes (in women)

Doctors used to believe migraines were linked to the opening and narrowing of blood vessels in the head. Now they believe the cause is related to genes that control the activity of some brain cells. Medicines can help prevent migraine attacks or help relieve symptoms of attacks when they happen. For many people, treatments to relieve stress can also help.

NIH: National Institute of Neurological Disorders and Stroke

  • Managing migraines at home
  • Migraine

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