MCMCB Pro
Y92.21

Y92.21School (private) (public) (state) as the place of occurrence of the external cause

Non-billable headerICD-10-CM

Y92.21 is a non-billable header ICD-10-CM code for school (private) (public) (state) as the place of occurrence of the external cause. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

Y92.21 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.

Code to one of these instead Y92.21

8 child codes. Green means billable.

Related codes at this level

Codes that share Y92.2. If Y92.21 is not quite right, the correct code is usually one of these.

Questions about Y92.21

Is Y92.21 a billable ICD-10-CM code?
No. Y92.21 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Y92.21 sit in the tabular list?
External causes of morbidity (V00-Y99), in the block Supplementary factors related to causes of morbidity classified elsewhere (Y90-Y99).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.