This case-insensitive code system https://standards.digital.health.nz/ns/name-prefix-code defines the following codes:

Code	Display
ac	Aircraftman
aircdre	Air Commodore
am	Air Marshal
amt	Able Medical Assistant
assoc prof	Associate Professor
asst prof	Assistant Professor
avm	Air Vice Marshal
bdr	Bombardier
br	Brother
brig	Brigadier
canon	Canon
capt	Captain
card	Cardinal
cdr	Commander
cdre	Commodore
col	Colonel
cpl	Corporal
cpomed	Chief Petty Officer Medic
dame	Dame
dr	Doctor
ens	Ensign
fsgt	Flight Sergeant
fgoff	Flying Officer
fltlt	Flight Lieutenant
fr	Father
gen	General
gpcapt	Group Captain
her excel	Her Excellency
his excel	His Excellency
hon	The Honourable
lac	Leading Aircraftman
lady	Lady
lcpl	Lance Corporal
lmed	Leading Medic
lt	Lieutenant
lt cdr	Lieutenant Commander
lt col	Lieutenant Colonel
lt gen	Lieutenant General
maj	Major
maj gen	Major General
mid	Midshipman
miss	Miss
mon	Monsignor
most rev	The Most Reverend
mr	Mr
mrs	Mrs
ms	Ms
mx	Mx
omt	Ordinary Medical Assistant
pltoff	Pilot Officer
pomed	Petty Officer Medic
prof	Professor
pte	Private
ra	Rear Admiral
rev	Reverend
right rev	The Right Reverend
rt hon	The Right Honourable
sgn cdr	Surgeon Commander
sgn lt	Surgeon Lieutenant
sgn ltcdr	Surgeon Lieutenant Commander
sgt	Sergeant
sir	Sir
sister	Sister
slt	Sub Lieutenant
spr	Sapper
sqnldr	Squadron Leader
ssgt	Staff Sergeant
tpr	Trooper
ven	The Venerable
very rev	The Very Reverend
wgcdr	Wing Commander
wo	Warrant Officer
womed	Warrant Officer Medic