Status: current, Sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2021. Module: SNOMED CT core
Descriptions:
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Corrosion of first degree of head and neck | Is a | True | Corrosion of head and neck | Inferred relationship | Some | |
| Corrosion of second degree of head and neck | Is a | True | Corrosion of head and neck | Inferred relationship | Some | |
| Corrosion of third degree of head and neck | Is a | True | Corrosion of head and neck | Inferred relationship | Some | 
Reference Sets
Description inactivation indicator reference set