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Excludes1: heat exhaustion due to salt depletion (T67.4)
T67.4 Heat exhaustion due to salt depletion
Heat prostration due to salt (and water) depletion
T67.5 Heat exhaustion, unspecified
Heat prostration NOS
T67.6 Heat fatigue, transient
T67.7 Heat edema
T67.8 Other effects of heat and light
T67.9 Effect of heat and light, unspecified

T68 Hypothermia

Includes: accidental hypothermia
hypothermia NOS
Excludes1: hypothermia following anesthesia (T88.51)
hypothermia not associated with low environmental temperature (R68.0)
hypothermia of newborn (P80.-)
Excludes2: frostbite (T33-T34)
Use additional code to identify source of exposure:
Exposure to excessive cold of man-made origin (W93)
Exposure to excessive cold of natural origin (X31)
The appropriate 7th character is to be added to code T68
A initial encounter
D subsequent encounter
S sequela

T69 Other effects of reduced temperature

Excludes2: frostbite (T33-T34)
Use additional code to identify source of exposure:
Exposure to excessive cold of man-made origin (W93)
Exposure to excessive cold of natural origin (X31)
The appropriate 7th character is to be added to each code from category T69
A initial encounter
D subsequent encounter
S sequela
T69.0 Immersion hand and foot
T69.01 Immersion hand
T69.011 Immersion hand, right hand
T69.012 Immersion hand, left hand
T69.019 Immersion hand, unspecified hand
T69.02 Immersion foot
Trench foot
T69.021 Immersion foot, right foot
T69.022 Immersion foot, left foot
T69.029 Immersion foot, unspecified foot
T69.1 Chilblains
T69.8 Other specified effects of reduced temperature
T69.