| Recommended Mapping (based on statistical analysis) |
| Source ICD-9 | Mapping Type | Target ICD-10 |
| 34670 (Diagnosis) - Ch mgr wo ar wo nt wo st (Chronic migraine without aura, without mention of intractable migraine without mention of status migrainosus) | Single To Single | G43709 (Diagnosis) - Chronic migraine w/o aura, not intractable, w/o stat migr (Chronic migraine without aura, not intractable, without status migrainosus) |
| CMS/CDC General Equivalence Mappings |
| 34670 (Diagnosis) - Ch mgr wo ar wo nt wo st (Chronic migraine without aura, without mention of intractable migraine without mention of status migrainosus) | Single To Single | Alternative #1: G43709 (Diagnosis) - Chronic migraine w/o aura, not intractable, w/o stat migr (Chronic migraine without aura, not intractable, without status migrainosus) |