2027 ICD-10-CM Diagnosis Code X19Contact with other heat and hot substances

ICD-10-CM Codes›V01–Y99›X10-X19›X19

ICD-10-CM X19
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

X19 is a non-billable ICD-10-CM category code for contact with other heat and hot substances, so it cannot be submitted on claims. Use a more specific code from this category instead, such as X19.XXXA, X19.XXXD, and X19.XXXS.

Code Identity

ICD-10-CM Code
X19
Billable Status
No — Non-Billable Category
Code Describes
Contact with other heat and hot substances
Short Description
Contact with other heat and hot substances
Same as the full description in the CMS dataset.
Chapter
X10-X19
Contact with heat and hot substances

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionX10-X19Contact with heat and hot substances
CategoryX19Contact with other heat and hot substances
This CodeX19Contact with other heat and hot substances

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to X19: its own notes plus those printed at block X10-X19 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.

On X19 itself
  • objects that are not normally hot, e.g., an object made hot by a house fire (X00-X08)
From Block X10-X19 Contact with heat and hot substances applies to 60 codes
  • exposure to excessive natural heat (X30)
  • exposure to fire and flames (X00-X08)

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 code X19
Values for category X19 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

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

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index; each main term links to its index entry.

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 X19Overview

What is the ICD-10 code for contact with other heat and hot substances?

X19 is the ICD-10-CM category for contact with other heat and hot substances, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is X19 (Contact with other heat and hot substances) a billable code?

No. This is a category header that groups the codes for contact with other heat and hot substances, and headers cannot be submitted on claims. Claims for contact with other heat and hot substances need a more specific code from this category, such as X19.XXXA, X19.XXXD, and X19.XXXS.

Can X19 be reported with X30?

Not as a rule. The Excludes1 note at block X10-X19, which applies to X19, lists "exposure to excessive natural heat (X30)". 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).