1. N

2. Na
Sodium

3. No Apparent (Acute) Disease
NAD
No Apparent (Acute) Disease

4. N/C
No Complaints

5. NG Tube
Nasogastric Tube

6. Neonatal Intensive Care Unit
NICU
Neonatal Intensive Care Unit

7. Noninsulin-dependent Diabetes Mellitus
NIDDM
Noninsulin-dependent Diabetes Mellitus

8. National Institute of Health
NIH
National Institute of Health

9. No Known Drug Allergies
NKDA
No Known Drug Allergies

10. Not Otherwise Specified
NOS
Not Otherwise Specified
Disorder appears to fall within the larger category but does not meet the criteria of any specific disorder within that category

11. n.p.o.
Nothing by Mouth

12. NS
Normal Saline

13. Nonsteroidal Anti-inflammtory Drug
NSAID
Nonsteroidal Anti-inflammtory Drug

14. N/V
Nausea and Vomiting

15. O

16. O & P
Ova and Parasites

17. OB
Obstetrics

18. Obsessive Compulsive Disorder
OCD
Obsessive Compulsive Disorder

19. OD
Right Eye

20. OOB
Out of Bed

21. OR
Operating Room

22. Open Reduction Internal Fixation
ORIF
Open Reduction Internal Fixation

23. OS
Left Eye

24. OT
Occupational Therapy

25. OTC
Over the Counter

26. OU
Both Eyes