X10-X19Not billable, use a more specific code below

Contact with heat and hot substances (X10-X19)

chapter 20: External Causes of Morbidity

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Instructional notes

Excludes1: not coded here, use a different code

  • exposure to excessive natural heat (X30)
  • exposure to fire and flames (X00-X08)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.

Read Section I.C.20 (page 87), 3 more topics

All codes under X10-X19

X10-X19 can't be used on a claim. Pick a billable code below; grey headings group them.

X10-X19 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.