T50.A15Adverse effect of pertussis vaccine, including combinations with a pertussis component

T50.A15 is the ICD-10-CM diagnosis code for adverse effect of pertussis vaccine, including combinations with a pertussis component. It belongs to category T50 (poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances), block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T50.A1 (poisoning by, adverse effect of and underdosing of pertussis vaccine, including combinations with a pertussis component), T50.A15 is specifically for adverse effect of pertussis vaccine, including combinations with a pertussis component. Related codes cover poisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional) (T50.A11), poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harm (T50.A12), poisoning by pertussis vaccine, including combinations with a pertussis component, assault (T50.A13), poisoning by pertussis vaccine, including combinations with a pertussis component, undetermined (T50.A14) and underdosing of pertussis vaccine, including combinations with a pertussis component (T50.A16).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.