Y31 — Falling, lying or running before or into moving object, undetermined intent
Y31 is a non-billable header ICD-10-CM code for falling, lying or running before or into moving object, undetermined intent. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to code Y31
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
Y31 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How Y31 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Y31.
- Lying before train, vehicle or other moving object›undetermined whether accidental or intentional
- Undetermined intent›falling, lying or running before moving object
- Undetermined intent›lying, falling or running before moving object
- Undetermined intent›running, falling or lying before moving object
- Jumped, jumping›before moving object NEC›undetermined whether accidental or intentional
Code to one of these instead Y31
3 child codes. Green means billable.
Questions about Y31
- Is Y31 a billable ICD-10-CM code?
- No. Y31 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does Y31 sit in the tabular list?
- External causes of morbidity (V00-Y99), in the block Event of undetermined intent (Y21-Y33).