Y36.A2XA — High level blast overpressure in war operations, initial encounter
Is Y36.A2XA billable?
Yes — Y36.A2XA is billable for FY2027. Y36.A2XA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Y36.A2XA may be submitted for encounters from October 1, 2026 through September 30, 2027.
Y36.A2XA at a glance
| Code | Y36.A2XA |
|---|---|
| Description | High level blast overpressure in war operations, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in Y36.A2XA?
In Y36.A2XA, the 7th character A means initial encounter. The 7th character is required for Y36.A2XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is Y36.A2XA listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under Y36.A2, the nearest indexed parent of Y36.A2XA. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- War operations › HLB overpressure (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › blast overpressure › high level (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
Inclusion terms
Alternative wording in documentation that is classified to Y36.A2XA.
- High level blast overpressure due to explosion in war operations
- HLB overpressure in war operations
Excludes1 — never code together — inherited from Y36
The conditions below can never be reported together with Y36.A2XA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code also — inherited from Y36.A
Two codes may be needed to describe the condition fully. Whether Y36.A2XA is sequenced first depends on the reason for the encounter.
How long has Y36.A2XA existed?
Y36.A2XA first appears in FY2026.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.