They submit an invoice with complex medical billing codes to the claims department of your insurer so that they will reimburse them on your behalf. (growingfamilybenefits.com)
As you can see, when you have a procedure done, you can have a LOT of billing codes for the same event. (thecollegeinvestor.com)
Getting certified in billing coding provides better job and skill acquisition opportunities, especially when you have attended further training programs. (jobdescriptionandresumeexamples.com)