Wiki Prothrombin denial

urbach34@yahoo.com

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Our protimes have been denied for dx since we've switched to ICD10. I've been using I48.91 for Afib. Is it because that is the unspecified code? HELP!
 
You need to code for both the reason for anticoagulation use (A.fib, chronic DVT, Hx of PE) and then Z79.01 status code.
Also, for Medicare a QW modifier is required.
 
In our office we use:

Z51.81 - Encounter for therapeutic drug level monitoring
(reason for drug ex: afib)
Z79.01 - Use of anticoagulants
 
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