- V30 Single liveborn
- V31 Twin birth mate liveborn
- V32 Twin birth mate stillborn
- V33 Twin birth unspecified whether mate liveborn or stillborn
- V34 Other multiple birth (three or more) mates all liveborn
- V35 Other multiple birth (three or more) mates all stillborn
- V36 Other multiple birth (three or more) mates liveborn and stillborn
- V37 Other multiple birth (three or more) unspecified whether mates liveborn or stillborn
- V39 Liveborn unspecified whether single twin or multiple
