T50.A11 — Poisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional)
Is T50.A11 billable?
No — T50.A11 is a non-billable header code. T50.A11 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 3 billable codes beneath T50.A11.
Billable codes under this header
- T50.A11APoisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional), initial encounter
- T50.A11DPoisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional), subsequent encounter
- T50.A11SPoisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional), sequela
T50.A11 at a glance
| Code | T50.A11 |
|---|---|
| Description | Poisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional) |
| 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.A11 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.A11. T50.A11 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.A11 to fully describe the condition. T50.A11 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.A11 to fully describe the condition. T50.A11 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T50.A11, but a patient may have both at the same time. When documentation supports it, T50.A11 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T50.A11, but a patient may have both at the same time. When documentation supports it, T50.A11 and the excluded code may both be reported.
What codes fall under T50.A11? (3)
- T50.A11APoisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional), initial encounter
- T50.A11DPoisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional), subsequent encounter
- T50.A11SPoisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional), sequela
How long has T50.A11 existed?
T50.A11 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.
What other codes are in the T50.A1 family? (5)
- T50.A12Poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harmnot billable
- T50.A13Poisoning by pertussis vaccine, including combinations with a pertussis component, assaultnot billable
- T50.A14Poisoning by pertussis vaccine, including combinations with a pertussis component, undeterminednot billable
- T50.A15Adverse effect of pertussis vaccine, including combinations with a pertussis componentnot billable
- T50.A16Underdosing of pertussis vaccine, including combinations with a pertussis componentnot billable