| Abbreviation | Definition |
|---|---|
| CO | Carbon Monoxide |
| CO | Check Out |
| CO | Cobalt |
| COAD | Chronic Obstructive Airway Disease |
| COAG | Chronic Open Angle Glaucoma |
| COBRA | Consolidated Omnibus Budget Reconciliation Act |
| COCP | Central Ohio Cardiovascular Physicians |
| COD | Cause Of Death |
| COD | Chemical Oxygen Demand |
| COD | Co Occurring Disorders |
| COD | Condition On Discharge |
| COD | Consumed Oxygen Demand |
| COD | Corrugated Optic Duct |
| COI | Chronic Orthostatic Intolerance |
| COLD | Chronic Obstructive Lung Disease |
| COMO | COnfederation of Meningitis Organisations |
| COMP | Cartilage Oligometic Matrix Protein |
| COMP | Compound |
| COMS | Crotchety Old Man Syndrome |
| CON | Connector |