| Acronym | Meaning |
| CID | Cervical Immobilization Device |
| CIN | Cervical Intraepithelial Neoplasm |
| CL | Cleft Lip |
| CMS | Circulation |
| CNS | Central Nervous System |
| CO | Cardiac Output |
| COAD | Chronic Obstructive Airways Disease |
| COPD | Chronic Obstructive Pulmonary Disease |
| COPD | Chronic Obstructive Pulmonary Disease |
| CP | Chest Pain |
| CPAP | Continuous Positive Airway Pressure |
| CPD | Cephalo-pelvic Disproportion |
| CPP | Cerebral Perfusion Pressure |
| CPPD | Chest Percussion And Post Drainage |
| CPR | Chronic Obstructive Airway Disease |
| CRF | Chronic Renal Failure |
| CRRT | Continuous Renal Replacement Therapy |
| CRT | Capillary Refill Time |
| CSF | Cerebrospinal Fluid |
| CSF | Cerebrospinal Fluid |
| CT | Chest Tube |
| CTD | Close To Death |
| CVA | Cerebral Vascular Accident |
| CVP | Central Venous Pressure |
| CX | Cervix |
| CXR | Chest X-ray |
| D5W | Dextrose 5% In Water (IV) |
| DAA | Denitrogenation Absorption Atelectasis |
| DAT | Diet As Tolerated |
| DC | (dc) Discontinue |
| DC(DC) | Discontinue |
| DCCT | Diabetes Control And Complication Trials |
| DEX | (DXT) Blood Sugar |
| DEX(DXT) | Blood Sugar |
| DIA | Digital Image Analysis |
| DIC | Disseminated Intravascular Coagulation |
| DKA | Diabetic Ketoacidosis |
| DM | Diabetic Mellitus |
| DNA | Deoxyribonucleic Acid |
| DNA | Deoxyribonucleic Acid |
| DNR | Do Not Resuscitate |
| DOA | Dead On Arrival |
| DP | Direct Pressure |
| DTR | Deep Tendon Reflex |
| DVT | Deep Vein Thrombosis |
| DX | Diagnosis |
| EBV | Epstein-Barr Virus |
| EBV | Epstein-Barr Virus |
| ECF | Extracellular Fluid |
| ECG | Electro CardioGram |