Finding the right CPC study guide is the first step in passing your Certified Professional Coder exam. If you really want to pass the exam on your first try you need to buy the best study material available and spend some serious time on your test prep. There are lots of options, but for this test you should buy the official study guide that is published by the AAPC. This is the one CPC study guide that I would recommend:
Official CPC Certification Study Guide. This official guide for the test is definitely the best one available. Very clearly written with plenty of diagrams, lists, and other visual aids. Each chapter does a great job explaining the important concepts, and there is quiz after each chapter to make sure you understand all the material. At the end of the book is a final practice exam to make sure you are completely prepared for your test.