Level 1
Level 2
Level 3
Level 4
Level 5
100

O2

oxygen

100
quart

qt

100

ointment

oint

100
T, temp

temperature

100

*OS

do not use

200

OOB

out of bed

200

PP

post partum

200

physician assistant

PA

200

*OU

do not use list

200

Para

# of pregnancies

300

patient care plan 

PCP

300

path

pathology

300

PNS

peripheral nervous system

300

personal protective equipment

PPE

300

RLQ

right lower quadrant

400

R/O

rule out
400

SPN

student practical nurse
400

tonsillectomy & adenoidectomy

T & A

400

if necessary

SOS

400

transient ischemic attack

TIA

500

PAC

premature atrial contraction

500

Transaminase Test

SGOT

500

whenever necessary

PRN

500

Occupational safety & health administration

OSHA

500

Omnibus budget reconciliation act

OBRA