| Label | Id | |
|---|---|---|
| Omphalocele | http://purl.bioontology.org/ontology/ICD10CM/Q79.2 | |
| Onchocerciasis | http://purl.bioontology.org/ontology/ICD10CM/B73 | |
| Onychia | http://purl.bioontology.org/ontology/ICD10CM/L03.0 | |
| Onychogryphosis | http://purl.bioontology.org/ontology/ICD10CM/L60.2 | |
| Onycholysis | http://purl.bioontology.org/ontology/ICD10CM/L60.1 | |
| Ophiasis | http://purl.bioontology.org/ontology/ICD10CM/L63.2 | |
| Opisthorchiasis | http://purl.bioontology.org/ontology/ICD10CM/B66.0 | |
| Orchitis | http://purl.bioontology.org/ontology/ICD10CM/N45.2 | |
| Organism | http://purl.bioontology.org/ontology/STY/T001 | |
| Organization | http://purl.bioontology.org/ontology/STY/T092 | |
| Orthopnea | http://purl.bioontology.org/ontology/ICD10CM/R06.01 | |
| Osteolysis | http://purl.bioontology.org/ontology/ICD10CM/M89.5 | |
| Osteomyelitis | http://purl.bioontology.org/ontology/ICD10CM/M86 | |
| Osteomyelofibrosis | http://purl.bioontology.org/ontology/ICD10CM/D47.4 | |
| Osteonecrosis | http://purl.bioontology.org/ontology/ICD10CM/M87 |