Answer
Medicare Secondary Payer (MSP) refers to instances in which Medicare does not have primary responsibility for paying the medical expenses of a Medicare beneficiary. This is because the Medicare beneficiary may be entitled to other coverage, which should pay the primary health benefits.

Medicare secondary claims can be submitted electronically. However, Palmetto GBA has rejected some claims because there was a mismatch between the MSP Type submitted on the claim and the specific patient's Medicare record. Below are some examples of situations that you may wish to verify when you receive these Medicare rejections:

• Do you routinely submit claims containing the same MSP Type (example: MSP type 47) when Medicare does not show this to be a valid MSP type for the specific patient?
• If you submit your claims to a clearinghouse, does your clearinghouse understand that claims must be submitted with the correct MSP Type?
• Is your patient covered by Medicare as an Aged Worker (Type 12), but claims for the patient are being submitted as Disability (Type 43)?
• Was your patient's injury related to Workers' Compensation (Type 15), but you submitted the MSP claim as an Aged Worker (Type 12)?
• If you submit claims through an electronic clearinghouse, make sure you provide the clearinghouse with the correct MSP Type for each claim. If you are still receiving rejections from Medicare, verify that your clearinghouse is submitting the MSP Type you provided for each patient.

• Always submit the appropriate MSP type for the beneficiary's insurance coverage
• If the submitted MSP type does not correspond to the information Medicare has on file, your claim will be rejected. Rejected claims must be submitted as new claims.