Wiki New CPT coded 2017 VS CPT 2016 codes


Los Osos, California
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in 2016 62311 was used, but in 2017 we have new codes.
I have a patient that had a LESI in December of 2016. Do I use the 2016 CPT codes or the new 2017 codes?

I have not been able to locate the answer to this question and I know I knew the answer at one time, but it has left my brain! Boy today is really a Monday!
The usage of the code sets go by visit date. If the visit/procedure date is prior to January 1, 2017 then you use 2016 CPT codes with 2017 ICD-10 CM codes. If the visit/procedure date is prior to October 1, 2016, then you would use 2016 CPT with 2016 ICD-10 CM.