ICD-10-CM > G00-G99 > G40-G47 > G43 > G43.7 G43.7 Chronic migraine without aura Non-Billable/Non-Specific Applicable To Transformed migraine Type 1 Excludes migraine without aura (G43.0-) Codes G43.70Chronic migraine without aura, not intractableG43.701Chronic migraine without aura, not intractable, with status migrainosusG43.709Chronic migraine without aura, not intractable, without status migrainosusG43.71Chronic migraine without aura, intractableG43.711Chronic migraine without aura, intractable, with status migrainosusG43.719Chronic migraine without aura, intractable, without status migrainosus