Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
| Id | Description | Lang | Type | Status | Case? | Module | 
| 46918011 | Twin birth | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core | 
| 46919015 | Twin birth, NOS | en | Synonym (core metadata concept) | Inactive | Only initial character case insensitive (core metadata concept) | SNOMED CT core | 
| 758665012 | Twin birth (finding) | en | Fully specified name | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core | 
| 680931000052115 | tvillingfödsel | sv | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT Sweden NRC maintained module (core metadata concept) | 
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Twin birth | Is a | prenatalt och/eller neonatalt stadium | false | Inferred relationship | Some | ||
| Twin birth | Is a | Finding of birth outcome | false | Inferred relationship | Some | ||
| Twin birth | Interprets | observabel som rör funktion | false | Inferred relationship | Some | ||
| Twin birth | Is a | Multiple birth | true | Inferred relationship | Some | ||
| Twin birth | Occurrence | Maternal pregnancy period | false | Inferred relationship | Some | 1 | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Twins - both live born | Is a | True | Twin birth | Inferred relationship | Some | |
| Twins - one still and one live born | Is a | True | Twin birth | Inferred relationship | Some | |
| Twins - both stillborn | Is a | True | Twin birth | Inferred relationship | Some | |
| Premature birth of newborn twins | Is a | True | Twin birth | Inferred relationship | Some | |
| Term birth of newborn twins | Is a | True | Twin birth | Inferred relationship | Some | 
Reference Sets