Falling, lying or running before or into moving object, undetermined intent (Y31) ICD-10-CM
The Y31 code range covers falling, lying or running before or into moving object, undetermined intent with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to code Y31
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the Y31 Range 4 codes · 3 billable
- Y31 Falling, lying or running before or into moving object, undetermined intentNon-billable
- Y31.XXXA Falling, lying or running before or into moving object, undetermined intent, initial encounter
- Y31.XXXD Falling, lying or running before or into moving object, undetermined intent, subsequent encounter
- Y31.XXXS Falling, lying or running before or into moving object, undetermined intent, sequela
About the Y31 Code Range
A person falls, lies, or runs before or into a moving object, and the intent behind the event is undetermined.
The final character separates an initial encounter, a subsequent encounter, and a sequela, or later effect.
Questions About This Page
How many billable codes are in the Y31 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Y31 range classify?
The range classifies falling, lying or running before or into moving object, undetermined intent. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
