| Label | Id | |
|---|---|---|
| Onycholysis | http://purl.bioontology.org/ontology/ICD10/L60.1 | |
| Ophiasis | http://purl.bioontology.org/ontology/ICD10/L63.2 | |
| Opisthorchiasis | http://purl.bioontology.org/ontology/ICD10/B66.0 | |
| Organism | http://purl.bioontology.org/ontology/STY/T001 | |
| Organization | http://purl.bioontology.org/ontology/STY/T092 | |
| Osteolysis | http://purl.bioontology.org/ontology/ICD10/M89.5 | |
| Osteomyelitis | http://purl.bioontology.org/ontology/ICD10/M86 | |
| Osteonecrosis | http://purl.bioontology.org/ontology/ICD10/M87 | |
| Osteopetrosis | http://purl.bioontology.org/ontology/ICD10/Q78.2 | |
| Osteophyte | http://purl.bioontology.org/ontology/ICD10/M25.7 | |
| Otalgia | http://purl.bioontology.org/ontology/ICD10/H92.0 | |
| Otorrhagia | http://purl.bioontology.org/ontology/ICD10/H92.2 | |
| Otorrhoea | http://purl.bioontology.org/ontology/ICD10/H92.1 | |
| Otosclerosis | http://purl.bioontology.org/ontology/ICD10/H80 | |
| Overactivity | http://purl.bioontology.org/ontology/ICD10/R46.3 |