| Abbreviation | Definition |
|---|---|
| DNO | Do Not Operate |
| DNR | Did Not Respond |
| DNR | Do Not Rest |
| DNR | Dorsal Nerve Root |
| DNS | Deviated Nasal Septum |
| DNS | Did Not Show for appointment |
| DO | Dissolved Oxygen |
| DO | Doctor of Osteopathy |
| DOA | Days Of Age |
| DOB | Date Of Birth |
| DOB | Donation Of Brain |
| DOC | Depression, Obstructive sleep apnea and Cognitive impairment |
| DOC | Died of Other Causes |
| DOC | Dissolved Organic Compound |
| DOC | Dissolved Oxygen Content |
| DOCPOT | Docusate Potassium |
| DOD | Damage OverDose |
| DOD | Dissolved Oxygen Demand |
| DOE | Date Of Examination |
| DOE | Decreased Oxygen Exchange |