Specific code 2012 ICD-9-CM Diagnosis Code 346.21
Variants of migraine, not elsewhere classified, with intractable migraine, so stated, without mention of status migrainosus
  • Short description: Vrnt mgrn w ntrc mgr NEC.
  • ICD-9-CM 346.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 346.21 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2012 version of ICD-9-CM 346.21.
  • More recent version(s) of ICD-9-CM 346.21: 2013 2014 2015.
Convert to ICD-10-CM: 346.21 converts approximately to:
  • 2015/16 ICD-10-CM G43.819 Other migraine, intractable, without status migrainosus
  • 2015/16 ICD-10-CM G43.A1 Cyclical vomiting, intractable
  • 2015/16 ICD-10-CM G43.B1 Ophthalmoplegic migraine, intractable
  • 2015/16 ICD-10-CM G43.C1 Periodic headache syndromes in child or adult, intractable
  • 2015/16 ICD-10-CM G43.D1 Abdominal migraine, intractable
Approximate Synonyms
  • Abdominal migraine intractable
  • Abdominal migraine, intractable
  • Allergic migraine intractable
  • Allergic migraine, intractable
  • Cyclical vomiting, intractable
  • Intractable abdominal migraine
  • Intractable allergic migraine
  • Intractable cyclical vomiting syndrome (disorder)
  • Intractable ophthalmoplegic migraine
  • Intractable periodic headache syndrome
  • Migraine variant, intractable
  • Ophthalmoplegic migraine intractable
  • Ophthalmoplegic migraine, intractable
  • Periodic headache syndromes, intractable
  • Refractory migraine variants
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 346.21 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.