Convert ICD-10-CM G43.B1 to ICD-9-CM

ICD-10-CM G43.B1 converts approximately to:
  • 2015 ICD-9-CM 346.21 Variants of migraine, not elsewhere classified, with intractable migraine, so stated, without mention of status migrainosus

Note: approximate conversions between ICD-9-CM codes and ICD-10-CM codes may require clinical interpretation in order to determine the most appropriate conversion code(s) for your specific coding situation.

Source: 2023 ICD-10-CM CMS General Equivalence Mappings.