Y92.21 — School (private) (public) (state) as the place of occurrence of the external cause
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.
Excludes1 inherited from the categories above Y92.21
These are not written on Y92.21, but they bind it: a note on a category applies to every code beneath it. Billing Y92.21 with anything listed here is a denial.
Written on Y92.2 — School, other institution and public administrative area as the place of occurrence of the external cause
- building under construction as the place of occurrence of the external cause (Y92.6)
- residential institution as the place of occurrence of the external cause (Y92.1)
- school dormitory as the place of occurrence of the external cause (Y92.16-)
- sports and athletics area of schools as the place of occurrence of the external cause (Y92.3-)
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 history
Y92.21 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead Y92.21
8 child codes. Green means billable.
- Y92.210Daycare center as the place of occurrence of the external cause
- Y92.211Elementary school as the place of occurrence of the external cause
- Y92.212Middle school as the place of occurrence of the external cause
- Y92.213High school as the place of occurrence of the external cause
- Y92.214College as the place of occurrence of the external cause
- Y92.215Trade school as the place of occurrence of the external cause
- Y92.218Other school as the place of occurrence of the external cause
- Y92.219Unspecified school as the place of occurrence of the external cause
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.
- Y92.22Religious institution as the place of occurrence of the external cause
- Y92.23Hospital as the place of occurrence of the external cause
- Y92.24Public administrative building as the place of occurrence of the external cause
- Y92.25Cultural building as the place of occurrence of the external cause
- Y92.26Movie house or cinema as the place of occurrence of the external cause
- Y92.29Other specified public building as the place of occurrence of the external cause
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).
- What cannot be coded together with Y92.21?
- Y92.21 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Y92.21 (Y92.2) and apply to it just the same.