Wiki Refractory migraine

buckeye56

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I need to code an acute refractory migraine headache and am unsure about the 5th digit. The word "intractable" occurs nowhere in the patient record so I tend to believe I can code only 346.90, despite the refractory diagnosis. Would appreciate hearing from someone who knows for sure. Thank you.
 
My opinion is to use the 5th digit 1 because "refractory" is mentioned. Also, because you don't mention a time frame and say "acute", it is not status migrainosus (lasting 72 hours). Just my interpretation.
 
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