Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2011. Module: SNOMED CT model component module (core metadata concept)
Descriptions:
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Concept history attribute (attribute) | Is a | Attribute | true | Inferred relationship | Some | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| MAY BE A | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | |
| WAS A | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | |
| SAME AS | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | |
| ISA (mapping) | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | |
| REPLACED BY (attribute) | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | |
| MOVED TO (attribute) | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | |
| MOVED FROM (attribute) | Is a | True | Concept history attribute (attribute) | Inferred relationship | Some | 
This concept is not in any reference sets