T68

ICD-10Non-billable category

Hypothermia

Official ICD-10-CM descriptor (FY2026)

Hypothermia

T68 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Inclusion terms

  • Accidental hypothermia
  • Hypothermia NOS

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • hypothermia following anesthesia (T88.51)
  • hypothermia not associated with low environmental temperature (R68.0)
  • hypothermia of newborn (P80.-)

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

  • frostbite (T33-T34)

Use additional code

Report an additional code to identify the associated condition.

  • code to identify source of exposure:
  • Exposure to excessive cold of man-made origin (W93)
  • Exposure to excessive cold of natural origin (X31)

7th character

  • The appropriate 7th character is to be added to code T68

Permitted 7th characters

Ainitial encounter
Dsubsequent encounter
Ssequela

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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