Convert ICD-10 Code A37.11 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
A37.11 Whooping cough due to Bordetella parapertussis w pneumonia		033.1 Bordetella parapertussis
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
A37.11 Whooping cough due to Bordetella parapertussis w pneumonia		484.3 Pneumonia in whoop cough
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.

ICD-10 to ICD-9 crosswalk for code A37.11 - whooping cough due to bordetella parapertussis with pneumonia based on the most recent General Equivalence Mappings (GEMS) information.