| Code | Display | Comments |
|---|
 FAMMEMB | family member | |
| CHILD | child | |
| CHLDADOPT | adopted child | |
| DAUADOPT | adopted daughter | |
| SONADOPT | adopted son | |
| CHLDFOST | foster child | |
| DAUFOST | foster daughter | |
| SONFOST | foster son | |
| DAUC | daughter | |
| DAU | natural daughter | |
| STPDAU | stepdaughter | |
| NCHILD | natural child | |
| SON | natural son | |
| SONC | son | |
| STPSON | stepson | |
| STPCHLD | step child | |
| EXT | extended family member | |
| AUNT | aunt | |
| MAUNT | maternal aunt | |
| PAUNT | paternal aunt | |
| COUSN | cousin | |
| MCOUSN | maternal cousin | |
| PCOUSN | paternal cousin | |
| GGRPRN | great grandparent | |
| GGRFTH | great grandfather | |
| MGGRFTH | maternal great-grandfather | |
| PGGRFTH | paternal great-grandfather | |
| GGRMTH | great grandmother | |
| MGGRMTH | maternal great-grandmother | |
| PGGRMTH | paternal great-grandmother | |
| MGGRPRN | maternal great-grandparent | |
| PGGRPRN | paternal great-grandparent | |
| GRNDCHILD | grandchild | |
| GRNDDAU | granddaughter | |
| GRNDSON | grandson | |
| GRPRN | grandparent | |
| GRFTH | grandfather | |
| MGRFTH | maternal grandfather | |
| PGRFTH | paternal grandfather | |
| GRMTH | grandmother | |
| MGRMTH | maternal grandmother | |
| PGRMTH | paternal grandmother | |
| MGRPRN | maternal grandparent | |
| PGRPRN | paternal grandparent | |
| INLAW | inlaw | |
| CHLDINLAW | child-in-law | |
| DAUINLAW | daughter in-law | |
| SONINLAW | son in-law | |
| PRNINLAW | parent in-law | |
| FTHINLAW | father-in-law | |
| MTHINLAW | mother-in-law | |
| MTHINLOAW | mother-in-law | |
| SIBINLAW | sibling in-law | |
| BROINLAW | brother-in-law | |
| SISINLAW | sister-in-law | |
| SISLINLAW | sister-in-law | |
| NIENEPH | niece/nephew | |
| NEPHEW | nephew | |
| NIECE | niece | |
| UNCLE | uncle | |
| MUNCLE | maternal uncle | |
| PUNCLE | paternal uncle | |
| PRN | parent | |
| ADOPTP | adoptive parent | |
| ADOPTF | adoptive father | |
| ADOPTM | adoptive mother | |
| FTH | father | |
| FTHFOST | foster father | |
| NFTH | natural father | |
| NFTHF | natural father of fetus | |
| STPFTH | stepfather | |
| MTH | mother | |
| GESTM | gestational mother | |
| MTHFOST | foster mother | |
| NMTH | natural mother | |
| NMTHF | natural mother of fetus | |
| STPMTH | stepmother | |
| NPRN | natural parent | |
| PRNFOST | foster parent | |
| STPPRN | step parent | |
| SIB | sibling | |
| BRO | brother | |
| HBRO | half-brother | |
| NBRO | natural brother | |
| TWINBRO | twin brother | |
| FTWINBRO | fraternal twin brother | |
| ITWINBRO | identical twin brother | |
| STPBRO | stepbrother | |
| HSIB | half-sibling | |
| HSIS | half-sister | |
| NSIB | natural sibling | |
| NSIS | natural sister | |
| TWINSIS | twin sister | |
| FTWINSIS | fraternal twin sister | |
| ITWINSIS | identical twin sister | |
| TWIN | twin | |
| FTWIN | fraternal twin | |
| ITWIN | identical twin | |
| SIS | sister | |
| STPSIS | stepsister | |
| STPSIB | step sibling | |
| SIGOTHR | significant other | |
| DOMPART | domestic partner | |
| FMRSPS | former spouse | |
| SPS | spouse | |
| HUSB | husband | |
| WIFE | wife | |