MCMCB Pro
T67.4

T67.4Heat exhaustion due to salt depletion

Non-billable headerICD-10-CM

T67.4 is a non-billable header ICD-10-CM code for heat exhaustion due to salt depletion. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T67

A
initial encounter
D
subsequent encounter
S
sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Heat prostration due to salt (and water) depletion

Other codes that can never be billed with T67.4

These codes carry an Excludes1 note pointing at T67.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T67.4 alone.

  • T67.3Heat exhaustion, anhydrotic
  • T67.3XXAHeat exhaustion, anhydrotic, initial encounter
  • T67.3XXDHeat exhaustion, anhydrotic, subsequent encounter
  • T67.3XXSHeat exhaustion, anhydrotic, sequela

Risk adjustment

T67.4 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How T67.4 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to T67.4.

  • Depletionsalt or sodiumcausing heat exhaustion or prostration
  • Exhaustion, exhaustiveheatdue tosalt depletion
  • Heatexhaustiondue tosalt depletion(and water)
  • Prostrationheatdue tosalt depletion(and water)
  • Heatexhaustiondue towater depletionwith salt depletion
  • Syndromesaltdepletiondue to heat NECcausing heat exhaustion or prostration

Code to one of these instead T67.4

3 child codes. Green means billable.

Related codes at this level

Codes that share T67. If T67.4 is not quite right, the correct code is usually one of these.

Questions about T67.4

Is T67.4 a billable ICD-10-CM code?
No. T67.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T67.4 sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Other and unspecified effects of external causes (T66-T78).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.