Y31
⚠ Non-billable
Falling, lying or running before or into moving object, undetermined intent
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
Y31
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Y31?
ICD-10-CM code Y31 represents Falling, lying or running before or into moving object, undetermined intent. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is Y31 billable?
No. Y31 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Y31 in?
Y31 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the Y31 category
Y31.XXXA
Falling, lying or running before or into moving object, undetermined intent, initial encounter
Billable
Y31.XXXD
Falling, lying or running before or into moving object, undetermined intent, subsequent encounter
Billable
Y31.XXXS
Falling, lying or running before or into moving object, undetermined intent, sequela
Billable
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