Co payments, co insurance, and deductibles are all examples of out-of-pocket costs that you could accept while seeing a doctor or other medical professional. You may have to pay more out of pocket or pay the whole amount if you visit a doctor or hospital that isn’t part of your health insurance network. It’s conceivable that your health insurance plan doesn’t have arrangements with any particular out-of-network doctors or hospitals. You may be responsible for paying the difference between what your plan agreed to pay and the total cost of a service provided by an out-of-network provider. This additional expense, known as “balance billing,” may not be included in your out-of-pocket maximum and may be greater than the in-network cost for the same or comparable treatment. https://securemso.com/appeal-filling-and-dispute-a-medical-bill/