2027 ICD-10-CM Diagnosis Code W93Exposure to excessive cold of man-made origin

ICD-10-CM Codes›V01–Y99›W85-W99›W93

ICD-10-CM W93
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

W93 is a non-billable ICD-10-CM category code for exposure to excessive cold of man-made origin, so it cannot be submitted on claims. Use a more specific code from this category instead, such as W93.01XA, W93.01XD, W93.01XS, and W93.02XA.

Code Identity

ICD-10-CM Code
W93
Billable Status
No — Non-Billable Category
Code Describes
Exposure to excessive cold of man-made origin
Short Description
Exposure to excessive cold of man-made origin
Same as the full description in the CMS dataset.
Chapter
W85-W99
Exposure to electric current, radiation and extreme ambient air temperature and pressure

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionW85-W99Exposure to electric current, radiation and extreme ambient air temperature and pressure
CategoryW93Exposure to excessive cold of man-made origin
This CodeW93Exposure to excessive cold of man-made origin

Specific Coding for Exposure to excessive cold of man-made originOverview

Non-specific codes like W93 require more characters. Use one of these billable codes instead:

  • W93.0 for Contact with or inhalation of dry ice

  • W93.01 for Contact with dry ice

  • W93.02 for Inhalation of dry ice

  • W93.1 for Contact with or inhalation of liquid air

  • W93.11 for Contact with liquid air

  • W93.12 for Inhalation of liquid air

  • W93.2 for Prolonged exposure in deep freeze unit or refrigerator

  • W93.8 for Exposure to other excessive cold of man-made origin

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to W93: its own notes plus those printed at block W85-W99 and Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block W85-W99 Exposure to electric current, radiation and extreme ambient air temperature and pressure applies to 99 codes
  • exposure to:
  • failure in dosage of radiation or temperature during surgical and medical care (Y63.2-Y63.5)
  • lightning (T75.0-)
  • natural cold (X31)
  • natural heat (X30)
  • natural radiation NOS (X39)
  • radiological procedure and radiotherapy (Y84.2)
  • sunlight (X32)

Notes

General instructions on how these codes are used.

From Chapter 20 (V00-Y99) External causes of morbidity and mortality applies to 7,461 codes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

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 W93
Values for category W93 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 W93, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming W93: they are not reported together with it, unless the two conditions are unrelated.

  • X31 Exposure to excessive natural cold
    cold of man-made origin (W93.-)
  • X31 Exposure to excessive natural cold
    contact with or inhalation of dry ice (W93.-)
  • X31 Exposure to excessive natural cold
    contact with or inhalation of liquefied gas (W93.-)

Use Additional Code 2

These codes say to use an additional code from the note, and W93 is one of the codes named.

  • T68 Hypothermia
    Exposure to excessive cold of man-made origin (W93)
  • T69 Other effects of reduced temperature
    Exposure to excessive cold of man-made origin (W93)

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 W93Overview

What is the ICD-10 code for exposure to excessive cold of man-made origin?

W93 is the ICD-10-CM category for exposure to excessive cold of man-made origin, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is W93 (Exposure to excessive cold of man-made origin) a billable code?

No. This is a category header that groups the codes for exposure to excessive cold of man-made origin, and headers cannot be submitted on claims. Claims for exposure to excessive cold of man-made origin need a more specific code from this category, such as W93.01XA, W93.01XD, and W93.01XS.

Can W93 be reported with a code from T75.0?

Not as a rule. The Excludes1 note at block W85-W99, which applies to W93, lists "lightning (T75.0-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).