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Y36.A1XA

Y36.A1XALow level blast overpressure in war operations, initial encounter

Billable / specific codeICD-10-CMPOA exempt

Y36.A1XA is a billable, specific ICD-10-CM code for low level blast overpressure in war operations, initial encounter. It is valid for submission on a claim.

7th character "A" — initial encounter

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.

  • LLB overpressure in war operations
  • Low level blast overpressure due to explosion in war operations

Risk adjustment

Y36.A1XA 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.

Related codes at this level

Codes that share Y36.A1. If Y36.A1XA is not quite right, the correct code is usually one of these.

Questions about Y36.A1XA

Is Y36.A1XA a billable ICD-10-CM code?
Yes. Y36.A1XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Y36.A1XA 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.