Contact with explosive material, undetermined intent
In Event of undetermined intent (Y21-Y33), chapter 20: External Causes of Morbidity
3 billable codes under Y25: none are a CC or MCC; none map to an HCC.
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Instructional notes
Also applies, from Event of undetermined intent (Y21-Y33)
These notes sit on Y21-Y33 and apply to every code under it, including Y25.
Includes: conditions that are coded here
- Undetermined intent is only for use when there is specific documentation in the record that the intent of the injury cannot be determined. If no such documentation is present, code to accidental (unintentional)
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.
- General External Cause Coding Guidelines (page 88)
- Place of Occurrence Guideline (page 89)
- Activity Code (page 89)
- Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
- If the Reporting Format Limits the Number of External Cause Codes (page 90)
- Multiple External Cause Coding Guidelines (page 90)
- Child and Adult Abuse Guideline (page 90)
- Unknown or Undetermined Intent Guideline (page 91)
All codes under Y25
Y25 can't be used on a claim. Pick a billable code below; grey headings group them.
Y25 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Code history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.