2027 ICD-10-CM Diagnosis Code X98Assault by steam, hot vapors and hot objects

ICD-10-CM Codes›V01–Y99›X92-Y09›X98

ICD-10-CM X98
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

X98 is a non-billable ICD-10-CM category code for assault by steam, hot vapors and hot objects, so it cannot be submitted on claims. Use a more specific code from this category instead, such as X98.0XXA, X98.0XXD, X98.0XXS, and X98.1XXA.

Code Identity

ICD-10-CM Code
X98
Billable Status
No — Non-Billable Category
Code Describes
Assault by steam, hot vapors and hot objects
Short Description
Assault by steam, hot vapors and hot objects
Same as the full description in the CMS dataset.
Chapter
X92-Y09
Assault

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionX92-Y09Assault
CategoryX98Assault by steam, hot vapors and hot objects
This CodeX98Assault by steam, hot vapors and hot objects

Specific Coding for Assault by steam, hot vapors and hot objectsOverview

Non-specific codes like X98 require more characters. Use one of these billable codes instead:

  • X98.0 for Assault by steam or hot vapors

  • X98.1 for Assault by hot tap water

  • X98.2 for Assault by hot fluids

  • X98.3 for Assault by hot household appliances

  • X98.8 for Assault by other hot objects

  • X98.9 for Assault by unspecified hot objects

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to X98: its own notes plus those printed at block X92-Y09 and Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block X92-Y09 Assault applies to 202 codes
  • homicide
  • injuries inflicted by another person with intent to injure or kill, by any means

Excludes1

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

From Block X92-Y09 Assault applies to 202 codes
  • injuries due to legal intervention (Y35.-)
  • injuries due to operations of war (Y36.-)
  • injuries due to terrorism (Y38.-)

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 X98
  • 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 X98, its category, or a range that includes it.

Use Additional Code 31

These codes say to use an additional code from the note, and X98 is one of the codes named.

  • T20.0 Burn of unspecified degree of head, face, and neck
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T20.1 Burn of first degree of head, face, and neck
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T20.2 Burn of second degree of head, face, and neck
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T20.3 Burn of third degree of head, face, and neck
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T21.0 Burn of unspecified degree of trunk
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T21.1 Burn of first degree of trunk
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T21.2 Burn of second degree of trunk
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T21.3 Burn of third degree of trunk
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T22.0 Burn of unspecified degree of shoulder and upper limb, except wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T22.1 Burn of first degree of shoulder and upper limb, except wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T22.2 Burn of second degree of shoulder and upper limb, except wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T22.3 Burn of third degree of shoulder and upper limb, except wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T23.0 Burn of unspecified degree of wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T23.1 Burn of first degree of wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code
  • T23.2 Burn of second degree of wrist and hand
    external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) names X96-X98, which includes this code

16 more Use Additional Code notes name this code. Browse all Use Additional Code notes.

Patient EducationClinical

Burns

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

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 X98Overview

What is the ICD-10 code for assault by steam, hot vapors and hot objects?

X98 is the ICD-10-CM category for assault by steam, hot vapors and hot objects, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is X98 (Assault by steam, hot vapors and hot objects) a billable code?

No. This is a category header that groups the codes for assault by steam, hot vapors and hot objects, and headers cannot be submitted on claims. Claims for assault by steam, hot vapors and hot objects need a more specific code from this category, such as X98.0XXA, X98.0XXD, and X98.0XXS.

Can X98 be reported with a code from Y35?

Not as a rule. The Excludes1 note at block X92-Y09, which applies to X98, lists "injuries due to legal intervention (Y35.-)". 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).