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G43.909
ICD-10-CM
Migraine

Find information on migraine diagnosis, including clinical documentation, medical coding (ICD-10 G43.x, ICHD-3), and healthcare best practices. Learn about migraine symptoms, diagnostic criteria, and common comorbidities for accurate medical record keeping and billing. Explore resources for healthcare professionals on managing migraine with effective treatments and patient care.

Also known as

Migraine Headache
Chronic Migraine
Migraine with Aura
+1 more

Diagnosis Snapshot

Key Facts
  • Definition : Severe headache with throbbing pain, often accompanied by nausea, vomiting, and sensitivity to light and sound.
  • Clinical Signs : Unilateral pulsating head pain, nausea, photophobia, phonophobia, aura (visual disturbances, tingling).
  • Common Settings : Neurology clinic, primary care, urgent care, emergency room.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC G43.909 Coding
G43.0-G43.9

Migraine

Recurrent headache disorder with various symptoms.

G44.0-G44.9

Other headache syndromes

Headache disorders not classified as migraine or tension-type.

R51

Headache

Generalized head pain without a more specific diagnosis.

F45.4

Persistent somatoform pain disorder

Chronic pain without sufficient organic cause, potentially including migraine-like symptoms.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the migraine with aura?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Migraine headache
Tension-type headache
Cluster headache

Documentation Best Practices

Documentation Checklist
  • Migraine diagnosis documentation: ICD-10-CM G43.x
  • Document headache characteristics: location, quality, severity
  • Associated symptoms: nausea, vomiting, photophobia, phonophobia
  • Migraine triggers, frequency, and duration documented
  • Impact on daily life and response to treatment

Coding and Audit Risks

Common Risks
  • Unspecified Migraine

    Coding migraine without specifying type (with/without aura, chronic/episodic) leads to inaccurate severity reflection and reimbursement issues. Impacts quality metrics.

  • Comorbidity Overlook

    Failing to code associated conditions like aura, nausea, or photophobia with migraine undercodes complexity, affecting resource allocation and treatment plans. CDI opportunity.

  • Status Migrainosus Miss

    Incorrectly coding prolonged migraine attacks (status migrainosus) as regular migraine leads to underpayment and inaccurate clinical documentation, raising compliance concerns.

Mitigation Tips

Best Practices
  • Document migraine triggers (ICD-10 G43.x) for accurate coding.
  • Specify migraine type (with/without aura) for improved CDI.
  • Ensure complete headache HPI for compliant billing (CPT 99202-99215).
  • Validate migraine diagnosis with diagnostic criteria (ICHD-3) for compliance.
  • Use standardized terminology for migraine symptoms for data integrity.

Clinical Decision Support

Checklist
  • Headache duration 4-72 hrs (ICD-10 G43.1)
  • At least 2 of: unilateral, pulsating, moderate-severe, aggravated by activity (SNOMED CT 25064002)
  • At least 1 of: nausea/vomiting, photophobia, phonophobia (SNOMED CT 418571009)
  • Not better accounted for by another ICHD-3 diagnosis (Patient safety)
  • Review & document migraine triggers and preventative strategies

Reimbursement and Quality Metrics

Impact Summary
  • Migraine reimbursement hinges on accurate ICD-10-CM coding (G43.x) and supporting documentation for medical necessity.
  • Quality metrics impacted: patient-reported outcome measures (PROMs) for headache severity and functional status.
  • Coding errors lead to claim denials, reduced revenue, and inaccurate hospital quality reporting for migraines.
  • Proper coding and documentation maximize migraine reimbursement and accurately reflect hospital performance.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code G43.x for migraine
  • Specify migraine type
  • Document aura symptoms
  • Include frequency/severity
  • Check 7th character guidance

Documentation Templates

Patient presents with a complaint of migraine headache.  The onset of the current migraine episode is described as gradual, beginning approximately [number] hoursdays prior to presentation.  The patient reports a unilateral, throbbing, pulsating headache located in the [rightleft] [frontaltemporalparietaloccipital] region.  Pain severity is reported as [mildmoderatesevere] on a scale of 1-10, with 10 being the worst pain imaginable.  Associated symptoms include photophobia, phonophobia, and nausea.  The patient denies vomiting, aura, or any neurological deficits.  Triggers for this migraine are reported as [stresslack of sleepcaffeine withdrawalspecific food triggershormonal changesother].  The patient has a history of migraine with [aura without aura] diagnosed [number] years ago.  Frequency of migraine attacks is estimated as [number] per month.  Previous treatments have included [list medications, therapies, and preventative measures].  Physical examination reveals a well-appearing patient in mildmoderate distress due to pain.  Neurological examination is normal.  Vital signs are within normal limits.  Diagnosis of migraine without aura is confirmed based on patient history, reported symptoms, and examination findings.  The patient was advised on migraine triggers, lifestyle modifications, and preventative strategies.  Prescribed treatment includes [acute medication, e.g., NSAIDs, triptans, CGRP inhibitors] for symptomatic relief and [preventative medication if applicable, e.g., beta-blockers, anticonvulsants, CGRP monoclonal antibodies] to reduce migraine frequency and severity.  Patient education materials on migraine management were provided.  Follow-up appointment scheduled in [timeframe] to assess treatment efficacy and adjust management plan as needed.  ICD-10 code G43.0 (Migraine without aura) is assigned.  Medical billing codes will be applied based on the services rendered.