2027 ICD-10-CM Diagnosis Code T69Other effects of reduced temperature

ICD-10-CM Codes›S00–T88›T66-T78›T69

ICD-10-CM T69
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T69 is a non-billable ICD-10-CM category code for other effects of reduced temperature, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T69.011A, T69.011D, T69.011S, and T69.012A.

Code Identity

ICD-10-CM Code
T69
Billable Status
No — Non-Billable Category
Code Describes
Other effects of reduced temperature
Short Description
Other effects of reduced temperature
Same as the full description in the CMS dataset.
Chapter
T66-T78
Other and unspecified effects of external causes

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT66-T78Other and unspecified effects of external causes
CategoryT69Other effects of reduced temperature
This CodeT69Other effects of reduced temperature

Specific Coding for Other effects of reduced temperatureOverview

Non-specific codes like T69 require more characters. Use one of these billable codes instead:

  • T69.0 for Immersion hand and foot

  • T69.01 for Immersion hand

  • T69.02 for Immersion foot

  • T69.1 for Chilblains

  • T69.8 for Other specified effects of reduced temperature

  • T69.9 for Effect of reduced temperature, unspecified

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Other effects of reduced temperature (T69). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T69: its own notes plus those printed at block T66-T78 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On T69 itself
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

On T69 itself
  • code to identify source of exposure:
  • Exposure to excessive cold of man-made origin (W93)
  • Exposure to excessive cold of natural origin (X31)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block T66-T78 Other and unspecified effects of external causes applies to 456 codes
  • if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category T69
Values for category T69 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name T69, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming T69: its condition is not part of those codes, and both may be reported when the patient has both.

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.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About T69Overview

What is the ICD-10 code for other effects of reduced temperature?

T69 is the ICD-10-CM category for other effects of reduced temperature, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is T69 (Other effects of reduced temperature) a billable code?

No. This is a category header that groups the codes for other effects of reduced temperature, and headers cannot be submitted on claims. Claims for other effects of reduced temperature need a more specific code from this category, such as T69.011A, T69.011D, and T69.011S.

Does T69 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code to identify source of exposure: Exposure to excessive cold of man-made origin (W93); Exposure to excessive cold of natural origin (X31). The additional code is reported after T69.