| N/T | No Tenderness/Not Tender | - | Medical(slang) |
| NA | Sodium | - | Medical(slang) |
| NACL | Sodium Chloride | - | Medical(slang) |
| NAD | No Acute Distress | - | Medical(slang) |
| NC | Nasal Cannula | - | Medical(slang) |
| NED | No Evidence Of Disease | - | Medical(slang) |
| NG | NasoGastric | - | Medical(slang) |
| NICU | Neonatal Intensive Care Unit | - | Medical(slang) |
| NIDDM | Noninsulin Dependent Diabetes Mellitus | - | Medical(slang) |
| NKA | No Known Allergies | - | Medical(slang) |
| NKDA | Non-Ketotic Diabetic Acidosis | - | Medical(slang) |
| NKDA | No Known Drug Allergies | - | Medical(slang) |
| NKDA | Non-ketotic Diabetic Acidosis | - | Medical(slang) |
| NKHC | Non-Ketotic Hyperglycemic Coma | - | Medical(slang) |
| NKHHC | NonKetonic Hyperglycemic-Hyperosmolar Coma | - | Medical(slang) |
| NKMA | No Known Medcation Allergies | - | Medical(slang) |
| NOS | Not Otherwise Specified | - | Medical(slang) |
| NPA | Nasopharyngeal Airway | - | Medical(slang) |
| NPD | Nightly Peritoneal Dialysis | - | Medical(slang) |
| NPO | Nothing By Mouth | - | Medical(slang) |
| NPQ | Not Physically Qualified | - | Medical(slang) |
| NS | Normal Saline (IV) | - | Medical(slang) |
| NSAID | Nonsteroidal Anti-inflammatory Drug | - | Medical(slang) |
| NSR | Normal Sinus Rythym (cardiac) | - | Medical(slang) |
| NT | NasoTracheal | - | Medical(slang) |
| NTD | Neural Tube Defect | - | Medical(slang) |
| NV | Nausea & Vomiting | - | Medical(slang) |
| NWB | NON-WEIGHT BEARING | - | Medical(slang) |
| NYD | Not Yet Diagnosed | - | Medical(slang) |
