What does a DV stand for after the medicare number?

Medicare part A = Hospital and Facility coverage Medicare part B = Professional (doctors and specialists) coverage Medicare part D = Rx Medicare part C = Part A B D combined After part C refers...

They refer to the category of eligibility, e.g., wage earner, spouse of wage earner, etc.

"A" denotes the wage earner - i.e., the person whose earnings record is the basis for Medicare eligibility, vs. his spouse, minor children, etc.

The letters denote the type of beneficiary - principal wage earner, spouse of wage earner, widow of wage earner, etc.

The letters after your Medicare claim number refer to the status of the claimant: i.e., wage earner, spouse of wage earner, child of wage earner, etc.