Whooping cough due to other specified organism

This code identifies pertussis (whooping cough) when the causative organism is known but is not Bordetella pertussis or Bordetella parapertussis. It indicates a confirmed diagnosis of whooping cough due to a less common or specified bacterial pathogen.

Apply this code when documentation explicitly states a diagnosis of whooping cough and specifies an organism other than B. pertussis or B. parapertussis as the etiology. This typically requires laboratory confirmation of the causative agent.

• Ensure the documentation clearly identifies the specific "other" organism; otherwise, a more general or unspecified code may be appropriate.
• Do not use for pertussis due to B. pertussis (033.0) or B. parapertussis (033.1).
• Consider an additional code for the identified organism if further specificity is needed and available in the documentation.