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Central Distributor SID: Description of Data Elements

PAY2_X - Expected secondary payer, as received from data source
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes

PAY2_X retains the expected secondary payer as provided by the data source. The original values have not been recoded into uniform HCUP values and are source-specific.

Two HCUP data elements contain uniformly coded information about the expected secondary payer:

  • PAY2 has general categories for Medicare, Medicaid, private insurance, and other payers.
  • PAY2_N has more detailed categories for private insurance and other payers. PAY2_N is only available in the 1988-1997 HCUP databases. This data element is discontinued beginning in the 1998 data because of the difficulty of coding the information uniformly across States.

Because the coding of expected primary and secondary payer is the same, information on the coding of PAY2_X is available under the note for expected primary payer (PAY1).

PAY2_X is included in the NIS beginning in 1998.

Uniform Values
VariableDescriptionValueValue Description
PAY2_XExpected secondary payer, as received from data sourcen(a)State specific coding - See the "State Specific Notes" section for details
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