I will be taking my exam in 2 weeks and just want to know if these books are ok or should I get the newer version. I have CPT 2015 AMA, 2015 HCPCS Level 2, and 2016 ICD-10-CM and also read somewhere that 2015 ICD-10 is more useful than 2016 so just want to make sure as I don't want to bomb the exam on that day. Thanks!