Y37 — Military operations
Y37 is a non-billable header ICD-10-CM code for military operations. 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 Y37
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- military aircraft involved in aircraft accident with civilian aircraft (V97.81-)
- military vehicles involved in transport accident with civilian vehicle (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)
- military watercraft involved in water transport accident with civilian watercraft (V94.81-)
- war operations (Y36.-)
Includes
Conditions this code covers.
- injuries to military personnel and civilians occurring during peacetime on military property and during routine military exercises and operations
Other codes that can never be billed with Y37
These codes carry an Excludes1 note pointing at Y37. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Y37 alone.
- V90Drowning and submersion due to accident to watercraft
- V91Other injury due to accident to watercraft
- V92Drowning and submersion due to accident on board watercraft, without accident to watercraft
- V93Other injury due to accident on board watercraft, without accident to watercraft
- V94Other and unspecified water transport accidents
- W49Exposure to other inanimate mechanical forces
- Y36Operations of war
- Y37.2Military operations involving other explosions and fragments
Risk adjustment
Y37 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 Y37
10 child codes. Green means billable.
- Y37.0Military operations involving explosion of marine weapons
- Y37.1Military operations involving destruction of aircraft
- Y37.2Military operations involving other explosions and fragments
- Y37.3Military operations involving fires, conflagrations and hot substances
- Y37.4Military operations involving firearm discharge and other forms of conventional warfare
- Y37.5Military operations involving nuclear weapons
- Y37.6Military operations involving biological weapons
- Y37.7Military operations involving chemical weapons and other forms of unconventional warfare
- Y37.9Other and unspecified military operations
- Y37.ABlast overpressure in military operations
Questions about Y37
- Is Y37 a billable ICD-10-CM code?
- No. Y37 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does Y37 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).
- What cannot be coded together with Y37?
- Y37 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.