Y36.A2: High level blast overpressure in war operations

New code · FY2026

Not billable: this is a header. Use one of the more specific codes below.

• New code, effective October 1, 2025 (FY2026).

Code breakdown

Coding notes

Inclusion terms

• High level blast overpressure due to explosion in war operations
• HLB overpressure in war operations

Code also (from Y36.A)

• type of explosive, if known
• accidental detonation of onboard munitions (Y36.140)
• explosion of grenade (Y36.290)
• explosion of torpedo (Y36.040)
• improvised explosive device (Y36.230)

Includes (from Y36)

• injuries to military personnel and civilians caused by war, civil insurrection, and peacekeeping missions

Excludes1 (from Y36)

• injury to military personnel occurring during peacetime military operations (Y37.-)
• military vehicles involved in transport accidents with non-military vehicle during peacetime (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)

7th character (from Y36)

• The appropriate 7th character is to be added to each code from category Y36

7th characters (category Y36)

• A initial encounter
• D subsequent encounter
• S sequela

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All FY2026 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.