CRC exam

You could read through the Optum 360 2022 Risk Adjustment Coding and HCC Guide as a supplement. I don't think you can bring this one in for the exam though.
I used the AMA Risk Adjustment book referenced here:

Did you do all the practice exams and study guide?
Make sure you read and understand all the dx guidelines and rules very well. Also, be sure you understand what trumps what.
It's a really tedious exam.