At one end of the medical spectrum is heroic surgery and molecular miracles.  At the other end is billing and reimbursement, which involve interpretations of diagnostic-related group (“DRG”) codes.  If Albert Einstein thought that federal income tax was the most complicated thing he ever encountered, it’s because he didn’t live to see DRG’s.  Here’s a free ear on the coding world-a site called “Codapedia”: You need to sign up for membership but it is FREE!