T50.A9 — Poisoning by, adverse effect of and underdosing of other bacterial vaccines
Is T50.A9 billable?
No — T50.A9 is a non-billable header code. T50.A9 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 18 billable codes beneath T50.A9.
Billable codes under this header
- T50.A91APoisoning by other bacterial vaccines, accidental (unintentional), initial encounter
- T50.A91DPoisoning by other bacterial vaccines, accidental (unintentional), subsequent encounter
- T50.A91SPoisoning by other bacterial vaccines, accidental (unintentional), sequela
- T50.A92APoisoning by other bacterial vaccines, intentional self-harm, initial encounter
- T50.A92DPoisoning by other bacterial vaccines, intentional self-harm, subsequent encounter
- T50.A92SPoisoning by other bacterial vaccines, intentional self-harm, sequela
- T50.A93APoisoning by other bacterial vaccines, assault, initial encounter
- T50.A93DPoisoning by other bacterial vaccines, assault, subsequent encounter
- T50.A93SPoisoning by other bacterial vaccines, assault, sequela
- T50.A94APoisoning by other bacterial vaccines, undetermined, initial encounter
- T50.A94DPoisoning by other bacterial vaccines, undetermined, subsequent encounter
- T50.A94SPoisoning by other bacterial vaccines, undetermined, sequela
- T50.A95AAdverse effect of other bacterial vaccines, initial encounter
- T50.A95DAdverse effect of other bacterial vaccines, subsequent encounter
- T50.A95SAdverse effect of other bacterial vaccines, sequela
- T50.A96AUnderdosing of other bacterial vaccines, initial encounter
- T50.A96DUnderdosing of other bacterial vaccines, subsequent encounter
- T50.A96SUnderdosing of other bacterial vaccines, sequela
T50.A9 at a glance
| Code | T50.A9 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of other bacterial vaccines |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T50.A9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T50.A9. T50.A9 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T50.A9 to fully describe the condition. T50.A9 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T50.A9 to fully describe the condition. T50.A9 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T50.A9, but a patient may have both at the same time. When documentation supports it, T50.A9 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T50.A9, but a patient may have both at the same time. When documentation supports it, T50.A9 and the excluded code may both be reported.
What codes fall under T50.A9? (6)
- T50.A91Poisoning by other bacterial vaccines, accidental (unintentional)not billable
- T50.A92Poisoning by other bacterial vaccines, intentional self-harmnot billable
- T50.A93Poisoning by other bacterial vaccines, assaultnot billable
- T50.A94Poisoning by other bacterial vaccines, undeterminednot billable
- T50.A95Adverse effect of other bacterial vaccinesnot billable
- T50.A96Underdosing of other bacterial vaccinesnot billable
How long has T50.A9 existed?
T50.A9 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.