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Y36.A2

Y36.A2High level blast overpressure in war operations

Non-billable headerICD-10-CM

Y36.A2 is a non-billable header ICD-10-CM code for high level blast overpressure in war 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 Y36

A
initial encounter
D
subsequent encounter
S
sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Risk adjustment

Y36.A2 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.

How Y36.A2 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Y36.A2.

  • War operationsHLB overpressure
  • War operationsblast overpressurehigh level(due to explosion)

Code to one of these instead Y36.A2

3 child codes. Green means billable.

Related codes at this level

Codes that share Y36.A. If Y36.A2 is not quite right, the correct code is usually one of these.

Questions about Y36.A2

Is Y36.A2 a billable ICD-10-CM code?
No. Y36.A2 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Y36.A2 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.