| Field Description | Field ID |
| Secondary Last Name | @SILAST |
| Secondary Insured First Name | @SIFIRST |
| Secondary Insured Middle Name | @SIMI |
| Secondary Insured Name (Last, First Middle) | @SINAME1 |
| Secondary Insured Name (First Middle Last) | @SINAME2 |
| Secondary Insured Address 1 | @SIADDR1 |
| Secondary Insured Address 2 | @SIADDR2 |
| Secondary Insured City | @SICITY |
| Secondary Insured State | @SISTATE |
| Secondary Insured Zip | @SIZIP |
| Secondary Insured Home Phone | @SIHOME |
| Secondary Insured Work Phone | @SIWORK |
| Secondary Insured Cell Phone | @SICELL |