Y36.A1XA — Low level blast overpressure in war operations, initial encounter
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.
Code history
What changed, and when. Derived by diffing consecutive CMS release files — which matters when you are defending a code assigned under an earlier edition.
- addedFY2024-FY2026
Low level blast overpressure in war operations, initial encounter
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).