ICD-9-CM Diagnosis Code 346.71
Diagnosis Code: 346.71 (Raw: 34671)
Description: Chronic migraine without aura, with intractable migraine, so stated, without mention of status migrainosus
Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)
Fiscal Year: 2026 Reference
CMS Section 111 Status: Valid for reporting.
Overview & Historical Usage
ICD-9-CM code 346.71 is designated for Chronic migraine without aura, with intractable migraine, so stated, without mention of status migrainosus. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.
