Y36.540D — War operation involving nuclear radiation effects of nuclear weapon, military personnel, subsequent encounter
Is Y36.540D billable?
Yes — Y36.540D is billable for FY2027. Y36.540D is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Y36.540D may be submitted for encounters from October 1, 2026 through September 30, 2027.
Y36.540D at a glance
| Code | Y36.540D |
|---|---|
| Description | War operation involving nuclear radiation effects of nuclear weapon, military personnel, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in Y36.540D?
In Y36.540D, the 7th character D means subsequent encounter. The 7th character is required for Y36.540D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is Y36.540D listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under Y36.54, the nearest indexed parent of Y36.540D. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- War operations › nuclear weapon › acute radiation exposure (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › nuclear weapon › fallout exposure (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › nuclear weapon › ionizing radiation (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › nuclear weapon › nuclear radiation (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › nuclear weapon › secondary effects (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › nuclear weapon › radiation › ionizing (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › nuclear weapon › radiation › nuclear (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
- War operations › weapons › nuclear › acute radiation exposure (injuries to military personnel and civilians during war, civil insurrection and peacekeeping missions) (by) (from) (involving)
Excludes1 — never code together — inherited from Y36
The conditions below can never be reported together with Y36.540D on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has Y36.540D existed?
Y36.540D 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.