ICD-10 G43.909: Migraine, unspecified, not intractable, without status migrainosus
Migraine without aura subtype specification. Use G43.0x (without aura), G43.1x (with aura) when documented.
Clinical context
Migraine without aura subtype specification. Use G43.0x (without aura), G43.1x (with aura) when documented.
Documentation requirements
- ICHD-3 criteria met
- Frequency (episodic vs chronic — chronic = ≥15 days/mo)
- Failed prior therapies
Common related procedures
- 64615 Botox for chronic migraine (requires chronic migraine + 2+ preventives failed)
- 99214
Common payer denial patterns
- CGRP injection (Aimovig, Emgality, Ajovy) requires 2+ preventive failures + 4+ migraine days/month
- Botox requires chronic migraine ≥15 days/month, headache ≥4 hours, ≥3 months
Frequently asked questions
What does ICD-10 G43.909 mean?
Migraine, unspecified, not intractable, without status migrainosus
When is this code documented?
Migraine without aura subtype specification. Use G43.0x (without aura), G43.1x (with aura) when documented.
What documentation supports this code?
ICHD-3 criteria met; Frequency (episodic vs chronic — chronic = ≥15 days/mo); Failed prior therapies.
What are common denials associated with this diagnosis?
CGRP injection (Aimovig, Emgality, Ajovy) requires 2+ preventive failures + 4+ migraine days/month; Botox requires chronic migraine ≥15 days/month, headache ≥4 hours, ≥3 months.
Related diagnoses
Sources
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