How should a hospital billing department respond to the request from an insurance company for a patient's entire medical record?

a$.$

The billing department should release the medical record

b$.$

The billing department should provide the patient with a notice that this request is being made and give them an opportunity to object

c$.$

The billing department should not release any portion of the medical record until the patient signs an authorization

d$.$

The billing department should release the minimum amount of the medical record necessary to process the claim