Y37.300A — Military operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter
Is Y37.300A billable?
Yes, but Y37.300A is an unspecified code. Y37.300A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Y37.300A is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Y37.300A — the more specific alternatives are listed below.
More specific alternatives
- Y37.310AMilitary operations involving gasoline bomb, military personnel, initial encounter
- Y37.320AMilitary operations involving incendiary bullet, military personnel, initial encounter
- Y37.330AMilitary operations involving flamethrower, military personnel, initial encounter
- Y37.390AMilitary operations involving other fires, conflagrations and hot substances, military personnel, initial encounter
Y37.300A at a glance
| Code | Y37.300A |
|---|---|
| Description | Military operations involving unspecified fire, conflagration and hot substance, military personnel, 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 Y37.300A?
In Y37.300A, the 7th character A means initial encounter. The 7th character is required for Y37.300A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is Y37.300A listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under Y37.30, the nearest indexed parent of Y37.300A. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Military operations › fire (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
Excludes1 — never code together — inherited from Y37
The conditions below can never be reported together with Y37.300A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- military aircraft involved in aircraft accident with civilian aircraft (V97.81-)
- military vehicles involved in transport accident with civilian vehicle (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)
- military watercraft involved in water transport accident with civilian watercraft (V94.81-)
- war operations (Y36.-)
Excludes1 — never code together — inherited from Y37.3
The conditions below can never be reported together with Y37.300A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- military operations involving fires and conflagrations aboard military aircraft (Y37.1-)
- military operations involving fires and conflagrations aboard military watercraft (Y37.0-)
- military operations involving fires and conflagrations caused indirectly by conventional weapons (Y37.2-)
- military operations involving fires and thermal effects of nuclear weapons (Y36.53-)
How long has Y37.300A existed?
Y37.300A has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.