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ICD-10-CM 2027 diagnosis code

X17.XXXAContact with hot engines, machinery and tools, initial encounter

✓ Billable / specificRequires 7th character

X17.XXXA is a valid, billable ICD-10-CM code for contact with hot engines, machinery and tools, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Contact with hot engines, machinery and tools, 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 X17.XXXA

X17.XXXA is the ICD-10-CM diagnosis code for contact with hot engines, machinery and tools, initial encounter. It belongs to category X17 (contact with hot engines, machinery and tools), 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 X17:

Notes that apply from higher levels

Instructions written at a parent level also apply to X17.XXXA.

› From X17 Contact with hot engines, machinery and tools
Excludes1
  • contact with hot heating appliances, radiators and pipes (X16)
  • contact with hot household appliances (X15)

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 X17.XXXA

Is X17.XXXA billable?

Yes. X17.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 X17.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 X17.XXXA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict X17.XXXA as a principal diagnosis.

Is X17.XXXA a CC or MCC?

No. X17.XXXA is neither a CC nor an MCC under MS-DRG v44.0.

What is the ICD-9 code for X17.XXXA?

The CMS General Equivalence Mappings map X17.XXXA to ICD-9-CM E924.8.