Medicare Coding, Compliance, Documentation

What’s the difference between Medicare Part A, B, C, D?
Do you have to accept assignment on supplemental or secondary plans?
Should you ever bill S8990 to Medicare?
Are ABNs required on every visit?
Should you bill 98940 even if you adjust multiple regions?
Does Medicare Part C pay for 99203 & 97110?
Do you have to do re-exams on Medicare patients?
How long is an ABN good for?
Par vs. Non-par
Plus much more!