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ICD-10-CM 2027 diagnosis code

X19.XXXAContact with other heat and hot substances, initial encounter

✓ Billable / specificRequires 7th character

X19.XXXA is a valid, billable ICD-10-CM code for contact with other heat and hot substances, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Contact with other heat and hot substances, init encntr

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About X19.XXXA

X19.XXXA is the ICD-10-CM diagnosis code for contact with other heat and hot substances, initial encounter. It belongs to category X19 (contact with other heat and hot substances), block X10-X19 (contact with heat and hot substances) and chapter 20 (external causes of morbidity). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

The 7th character "A" means initial encounter: use it while the patient is receiving active treatment for the condition.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as E924.8 (accident caused by other hot substance or object).

7th character

Ainitial encounter

Other encounter types for X19:

Notes that apply from higher levels

Instructions written at a parent level also apply to X19.XXXA.

› From X19 Contact with other heat and hot substances
Excludes1
  • objects that are not normally hot, e.g., an object made hot by a house fire (X00-X08)

Broader instructions also apply from X10-X19 Contact with heat and hot substances and Chapter 20: External causes of morbidity.

ICD-9-CM equivalent

Converter →
  • E924.8Accident caused by other hot substance or objectapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about X19.XXXA

Is X19.XXXA billable?

Yes. X19.XXXA is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "A" at the end of X19.XXXA mean?

It is the 7th character for initial encounter. Per the official guidelines, use it while the patient is receiving active treatment for the condition.

Can X19.XXXA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict X19.XXXA as a principal diagnosis.

Is X19.XXXA a CC or MCC?

No. X19.XXXA is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for X19.XXXA?

The CMS General Equivalence Mappings map X19.XXXA to ICD-9-CM E924.8.