T50.B1 — Poisoning by, adverse effect of and underdosing of smallpox vaccines
Is T50.B1 billable?
No — T50.B1 is a non-billable header code. T50.B1 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.B1.
Billable codes under this header
- T50.B11APoisoning by smallpox vaccines, accidental (unintentional), initial encounter
- T50.B11DPoisoning by smallpox vaccines, accidental (unintentional), subsequent encounter
- T50.B11SPoisoning by smallpox vaccines, accidental (unintentional), sequela
- T50.B12APoisoning by smallpox vaccines, intentional self-harm, initial encounter
- T50.B12DPoisoning by smallpox vaccines, intentional self-harm, subsequent encounter
- T50.B12SPoisoning by smallpox vaccines, intentional self-harm, sequela
- T50.B13APoisoning by smallpox vaccines, assault, initial encounter
- T50.B13DPoisoning by smallpox vaccines, assault, subsequent encounter
- T50.B13SPoisoning by smallpox vaccines, assault, sequela
- T50.B14APoisoning by smallpox vaccines, undetermined, initial encounter
- T50.B14DPoisoning by smallpox vaccines, undetermined, subsequent encounter
- T50.B14SPoisoning by smallpox vaccines, undetermined, sequela
- T50.B15AAdverse effect of smallpox vaccines, initial encounter
- T50.B15DAdverse effect of smallpox vaccines, subsequent encounter
- T50.B15SAdverse effect of smallpox vaccines, sequela
- T50.B16AUnderdosing of smallpox vaccines, initial encounter
- T50.B16DUnderdosing of smallpox vaccines, subsequent encounter
- T50.B16SUnderdosing of smallpox vaccines, sequela
T50.B1 at a glance
| Code | T50.B1 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of smallpox 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.B1 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.B1. T50.B1 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.B1 to fully describe the condition. T50.B1 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.B1 to fully describe the condition. T50.B1 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T50.B1, but a patient may have both at the same time. When documentation supports it, T50.B1 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T50.B1, but a patient may have both at the same time. When documentation supports it, T50.B1 and the excluded code may both be reported.
What codes fall under T50.B1? (6)
- T50.B11Poisoning by smallpox vaccines, accidental (unintentional)not billable
- T50.B12Poisoning by smallpox vaccines, intentional self-harmnot billable
- T50.B13Poisoning by smallpox vaccines, assaultnot billable
- T50.B14Poisoning by smallpox vaccines, undeterminednot billable
- T50.B15Adverse effect of smallpox vaccinesnot billable
- T50.B16Underdosing of smallpox vaccinesnot billable
How long has T50.B1 existed?
T50.B1 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.