[x] Add and review mappings for diagnosis to the Kids First FHIR Mapping spreadsheet
[x] Create StructureDefinition for diagnosis if needed
- [ ] Create any necessary Extensions for added attributes- [ ] Create SearchParameters for the Extensions from ^
[ ] Create any necessary CodeSystems or ValueSets
[x] Create Python mapper for diagnosis
[ ] Load PCGC diagnoses into FHIR server using the Python mapper
- [ ] Create any necessary Extensions for added attributes- [ ] Create SearchParameters for the Extensions from ^