MCMedicalCodingSoftware
Y37.A

Y37.A: Blast overpressure in military operations

Non-billable headerICD-10-CM

Y37.A is a non-billable header ICD-10-CM code for blast overpressure in 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

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

  • type of explosive, if known
  • accidental detonation of onboard munitions (Y37.140)
  • explosion of grenade (Y37.290)
  • explosion of torpedo (Y37.040)
  • improvised explosive device (Y37.230)

Excludes1 inherited from the categories above Y37.A

A category’s note binds every code beneath it.

Written on Y37: Military operations

Other codes that can never be billed with Y37.A

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • V91Other injury due to accident to watercraft
  • V93Other injury due to accident on board watercraft, without accident to watercraft
  • W49Exposure to other inanimate mechanical forces
  • Y36Operations of war

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Y37.A

2 child codes. Green means billable.

Other codes under Y37

ICD-10-CMFY2027· effective October 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.