Final answer:
The insurance company may deny payment if there is no documentation of the patient's use of a heating pad.
Step-by-step explanation:
If a patient has a heating pad ordered, but its use is not documented, the insurance company may deny payment because there is no evidence of use.
The insurance company needs documentation to ensure that the services or items billed for were actually used by the patient. Without documentation of the patient's use of the heating pad, the insurance company may consider it an unnecessary expense and deny payment.
If there is no documentation, the insurance company may request further information from the healthcare provider, such as the nurse, to verify that the heating pad was in use.