Similarly, you may ask, why do doctors bill more than insurance will pay?
Insurance companies will always pay what ever a medical provider bills up to the maximum amount they're willing to pay for any service. So, if a doctor bills $100 for an office visit, and the insurance company is willing to pay $75, the doctor will get $75.
Furthermore, do insurance companies negotiate hospital bills? Insurance companies negotiate with health care providers all the time. You can, too. Doctor fees and hospital bills aren't the only bills you can negotiate. You can also negotiate your dental work and lab fees.
Furthermore, why do health insurance companies pay less?
Those charges are different from hospital to hospital. But insurance companies don't pay those listed charges. Instead, each insurer negotiates for lower prices with each hospital and doctor on every plan. The negotiated prices even can vary within an insurance company depending on which plan a patient has.
What is an insurance adjustment on a medical bill?
"Adjustment" (discount) refers to the portion of your bill that your hospital or doctor has agreed not to charge. When the insurance company pays their portion, the discounted amount (adjustment) is taken off to show the true amount due from the patient (co-insurance).