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Central Distributor SID: Description of Data Elements

PAY2 - Expected secondary payer, uniform
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes

PAY2 indicates the expected secondary payer (Medicare, Medicaid, private insurance, etc.). To ensure uniformity of coding across data sources, PAY2 combines detailed categories in the more general groups. For example,

  • Medicare includes both fee-for-service and managed care Medicare patients.
  • Medicaid includes both fee-for-service and managed care Medicaid patients.
  • Private insurance (PAY2 = 3) includes Blue Cross, commercial carriers, and private HMOs and PPOs.
  • Other (PAY2 = 6) includes Worker's Compensation, CHAMPUS, CHAMPVA, Title V, and other government programs.

In the 1988-1997 data, the data element PAY2_N provides more detailed categories for private insurance and other payers. This data element is discontinued beginning in the 1998 data because of the difficulty of coding the information uniformly across States.

The HCUP data element PAY2_X retains the expected primary payer as provided by the data source.

Because the coding of expected primary and secondary payer is the same, information on the coding of PAY2 is available under the note for expected primary payer (PAY1).

Uniform Values
VariableDescriptionValueValue Description
PAY2Expected secondary payer, uniform1Medicare
3Private insurance
5No charge
.BUnavailable from source (coded in 1988-1997 data only)
State Specific Notes

Information on State specific coding for this data element is available under the "State Specific Notes" section for the data element PAY1.


Internet Citation: HCUP Central Distributor SID Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). May 2024. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 5/22/24