2026 ICD-10-CM Diagnosis Code R68.0Hypothermia, not associated with low environmental temperature

ICD-10-CM Codes›R00–R99›R50-R69›R68

ICD-10-CM R68.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R68.0 is a billable ICD-10-CM diagnosis code for hypothermia, not associated with low environmental temperature. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 947 through 948. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as decreased skin temperature. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.

Code Identity

ICD-10-CM Code
R68.0
Billable Status
Yes — Valid for Submission
Code Describes
Hypothermia, not associated with low environmental temperature
Short Description
Hypothermia, not associated w low environmental temperature
Parent Code
R68
Other general symptoms and signs

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR50-R69General symptoms and signs
CategoryR68Other general symptoms and signs
This CodeR68.0Hypothermia, not associated with low environmental temperature

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Decreased skin temperature
  • Hypothermia
  • Hypothermia not associated with low environmental temperature
  • Induced hypothermia

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • hypothermia NOS accidental T68
  • hypothermia due to anesthesia T88.51
  • hypothermia due to low environmental temperature T68
  • newborn hypothermia P80

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Hypopyrexia
    • Hypothermia(accidental)
      • not associated with low environmental temperature

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM016
Other general signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hypothermia

Cold weather can affect your body in different ways. You can get frostbite, which is an injury to the body that is caused by freezing. Your body can also lose heat faster than you can produce it. That can cause hypothermia, or abnormally low body temperature. It can make you sleepy, confused, and clumsy.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert R68.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
780.65 Hypothrm-wo low env tmp
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R68.0Overview

Is R68.0 (Other general symptoms and signs) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hypothermia, not associated with low environmental temperature on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R68.0 group to?

When hypothermia, not associated with low environmental temperature is the principal diagnosis on an inpatient stay, it groups to MS-DRG 947, 948, with relative weights from 0.8005 to 1.2694 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R68.0 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the hypothermia, not associated with low environmental temperature is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R68.0?

Under the General Equivalence Mappings, hypothermia, not associated with low environmental temperature converts to ICD-9-CM 780.65 (hypothrm-wo low env tmp). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.