Status: current, Sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group |
| Unblocking of ventilation tube through tympanic membrane | Is a | False | Attention to middle ear ventilation tube | Inferred relationship | Some | |
| Replacement of ventilation tube through tympanic membrane | Is a | False | Attention to middle ear ventilation tube | Inferred relationship | Some | |
| Repositioning of ventilation tube through tympanic membrane (procedure) | Is a | False | Attention to middle ear ventilation tube | Inferred relationship | Some | |
| Maintenance of ventilation tube through tympanic membrane | Is a | True | Attention to middle ear ventilation tube | Inferred relationship | Some | |
| Removal of catheter from middle ear | Is a | False | Attention to middle ear ventilation tube | Inferred relationship | Some | |
| Unblocking of ventilation tube through tympanic membrane | Is a | True | Attention to middle ear ventilation tube | Inferred relationship | Some |
This concept is not in any reference sets