MCMCB Pro
Y38.9

Y38.9Terrorism, secondary effects

Non-billable headerICD-10-CM

Y38.9 is a non-billable header ICD-10-CM code for terrorism, secondary effects. 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 each code from category Y38

A
initial encounter
D
subsequent encounter
S
sequela

Notes

Additional guidance from the ICD-10-CM tabular list.

  • This code is for use to identify conditions occurring subsequent to a terrorist attack not those that are due to the initial terrorist attack

Risk adjustment

Y38.9 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 Y38.9

1 child code. Green means billable.

Related codes at this level

Codes that share Y38. If Y38.9 is not quite right, the correct code is usually one of these.

Questions about Y38.9

Is Y38.9 a billable ICD-10-CM code?
No. Y38.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Y38.9 sit in the tabular list?
External causes of morbidity (V00-Y99), in the block Legal intervention, operations of war, military operations, and terrorism (Y35-Y38).
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.