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The appropriate 7th character is to be added to each code from category Y23
A initial encounter
D subsequent encounter
S sequela
Y23.0 Shotgun discharge, undetermined intent
Y23.1 Hunting rifle discharge, undetermined intent
Y23.2 Military firearm discharge, undetermined intent
Y23.3 Machine gun discharge, undetermined intent
Y23.8 Other larger firearm discharge, undetermined intent
Y23.9 Unspecified larger firearm discharge, undetermined intent

Y24 Other and unspecified firearm discharge, undetermined intent

The appropriate 7th character is to be added to each code from category Y24
A initial encounter
D subsequent encounter
S sequela
Y24.0 Airgun discharge, undetermined intent
BB gun discharge, undetermined intent
Pellet gun discharge, undetermined intent
Y24.8 Other firearm discharge, undetermined intent
Paintball gun discharge, undetermined intent
Very pistol [flare] discharge, undetermined intent
Y24.9 Unspecified firearm discharge, undetermined intent

Y25 Contact with explosive material, undetermined intent

The appropriate 7th character is to be added to code Y25
A initial encounter
D subsequent encounter
S sequela

Y26 Exposure to smoke, fire and flames, undetermined intent

The appropriate 7th character is to be added to code Y26
A initial encounter
D subsequent encounter
S sequela

Y27 Contact with steam, hot vapors and hot objects, undetermined intent

The appropriate 7th character is to be added to each code from category Y27
A initial encounter
D subsequent encounter
S sequela
Y27.0 Contact with steam and hot vapors, undetermined intent
Y27.1 Contact with hot tap water, undetermined intent
Y27.2 Contact with hot fluids, undetermined intent
Y27.3 Contact with hot household appliance, undetermined intent