T67.4Heat exhaustion due to salt depletion

T67.4 is the ICD-10-CM diagnosis code for heat exhaustion due to salt depletion. It belongs to category T67 (effects of heat and light), block T66-T78 (other and unspecified effects of external causes) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T67 (effects of heat and light), T67.4 is specifically for heat exhaustion due to salt depletion. Related codes cover heatstroke and sunstroke (T67.0), heat syncope (T67.1), heat cramp (T67.2), heat exhaustion, anhydrotic (T67.3), heat exhaustion, unspecified (T67.5), heat fatigue, transient (T67.6), heat edema (T67.7), other effects of heat and light (T67.8) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.