Y37.540S — Military operation involving nuclear radiation effects of nuclear weapon, military personnel, sequela
Is Y37.540S billable?
Yes — Y37.540S is billable for FY2027. Y37.540S is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Y37.540S may be submitted for encounters from October 1, 2026 through September 30, 2027.
Y37.540S at a glance
| Code | Y37.540S |
|---|---|
| Description | Military operation involving nuclear radiation effects of nuclear weapon, military personnel, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in Y37.540S?
In Y37.540S, the 7th character S means sequela. The 7th character is required for Y37.540S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is Y37.540S listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under Y37.54, the nearest indexed parent of Y37.540S. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Military operations › nuclear weapon › acute radiation exposure (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › nuclear weapon › fallout exposure (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › nuclear weapon › ionizing radiation (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › nuclear weapon › nuclear radiation (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › nuclear weapon › secondary effects (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › nuclear weapon › radiation › ionizing (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › nuclear weapon › radiation › nuclear (injuries to military and civilians occuring during peacetime on military property and during routine military exercises and operations) (by) (from) (involving)
- Military operations › weapons › nuclear › acute radiation exposure (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 Y37.540S 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.-)
How long has Y37.540S existed?
Y37.540S 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.