Y64.1 — Contaminated medical or biological substance, injected or used for immunization
Is Y64.1 billable?
Yes — Y64.1 is billable for FY2027. Y64.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Y64.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Y64.1 at a glance
| Code | Y64.1 |
|---|---|
| Description | Contaminated medical or biological substance, injected or used for immunization |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is Y64.1 listed in the External Cause Index?
These are the routes through the External Cause of Injuries Index that lead to Y64.1 — how the injury happened, rather than what the injury was.
- Misadventureduring surgical or medical care › contaminated medical or biological substance › administeredNEC › immunization (s) to patient(s)
- Misadventureduring surgical or medical care › contaminated medical or biological substance › administeredNEC › injection (s) to patient(s)
- Misadventureduring surgical or medical care › contaminated medical or biological substance › administeredNEC › vaccination (s) to patient(s)
Excludes1 — never code together — inherited from Y62-Y69
The conditions below can never be reported together with Y64.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- surgical and medical procedures as the cause of abnormal reaction of the patient, without mention of misadventure at the time of the procedure (Y83-Y84)
Excludes2 — not included here — inherited from Y62-Y69
The conditions below are not part of Y64.1, but a patient may have both at the same time. When documentation supports it, Y64.1 and the excluded code may both be reported.
- breakdown or malfunctioning of medical device (during procedure) (after implantation) (ongoing use) (Y70-Y82)
How long has Y64.1 existed?
Y64.1 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.