| Title | Type |
|---|---|
| Carrier screening programs | Feature |
| Carrier screening thalassemia | Symptom |
| CDKL5 deficiency | Rare Condition |
| Cerebral palsy | Disease |
| Cervical block vertebrae | Symptom |
| Cheek bones (small) | Feature |
| Chromosome 21 Down syndrome | Rare Condition |
| Chromosome Ring 20 Syndrome | Rare Condition |
| Chromosome Ring 20 Syndrome | General Medical Guideline |
| Chronic fatigue, unspecified | Disease |
| Cleidocranial Dysplasia / Dysostosis | General Medical Guideline |
| Cleidocranial Dysplasia in family | Symptom |
| Cleidocranial Dysplasia or Dysostosis | Rare Condition |
| Coffin Lowry Syndrome | General Medical Guideline |
| Coffin Lowry Syndrome | Rare Condition |
| Conductive hearing loss | Disease |
| Congenital hallux valgus | Symptom |
| Congenital hallux valgus | Disease |
| Congenital vertebral anomaly guideline | Specific Medical Guideline |
| Conjugated Hyperbilirubinemia | Symptom |
| Craniosynostosis | Disease |
| Creatine-kinase in plasma or serum | Feature |