Billing for Multiple Laboratory Services

Multiple services from the Laboratory Procedures section of the MSC Payment Schedule are usually billed at 100%; specific exceptions are listed in the Schedule. The following examples are provided to assist you in understanding how to bill multiple laboratory services.

Multiple Immunoglobulin and Specific Protein Assays

Refer to Generic Listings Split, Chemistry in the Laboratory Procedures section of the MSC Payment Schedule. When more than one assay is billed from the listings under item a) Immunoglobulin and Specific Protein Assays, additional items are paid at the same rate as fee item 91831 (Immunoglobulin and specific protein assays - additional assay, same patient, same specimen, same day). All assays are billed under the specific fee item for the tests performed. MSP will reduce payment to the same rate as fee item 91831.

Multiple Drug Assays

Refer to Generic Listings Split, Chemistry, under the Laboratory Procedures section of the MSC Payment Schedule.

When more than one assay is billed from the listings under item c) - Drug Assay, the maximum amount paid will be equivalent to fee item 91599 - Drug Assay - multiple (2 or more).

All assays are billed under the specific listings for the tests performed. MSP will reduce payment so that the maximum amount paid for one day is equivalent to fee item 91599.

Duplicate/Multiple Laboratory Services

Many items in the Laboratory Procedures section of the MSC Payment Schedule can be billed more than once for the same patient on the same day.

When billing multiple laboratory services, put the items on the same line, whenever possible. If billing more than the usual limit, a note record is required.

If the multiple services are performed at different times on the same day, include the time on each billing or provide a note record to indicate that specimens were taken at different times, along with the medical requirement (such as pre and post dialysis).

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