Convert ICD-10 Code T50.A16A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T50.A16A Undrdose of pertussis vaccine, inc combin w pertuss, init
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ICD-10 to ICD-9 crosswalk for code T50.A16A - underdosing of pertussis vaccine, including combinations with a pertussis component, initial encounter based on the most recent General Equivalence Mappings (GEMS) information.