Reddit reviews SAS Programming with Medicare Administrative Data

The structure of the claims might vary depending on the source but a good source of information are the videos you can find at https://www.resdac.org/workshops/intro-medicare. Check out the rest of the resdac website as well. This book is pretty good but might not match your claims exactly if you work with a contractor as opposed to a research organization.

There are lots of nuances using Medicare claims data that you will have to learn. Hopefully you have someone with experience to guide you. The learning curve is rather steep but not insurmountable. If you come across specific questions please post them here.