According to the U.S. Centers for Medicare and Medicaid Services, as of 2014, there are eight possible ICD-9 codes for cough and include: 033.0, 033.1, 033.8, 033.9, 339.83, 484.3, 493.82 and 786.2. The correct code depends on the type of cough with which the patient is diagnosed.
CMS reports that code 033.0 specifies whooping cough due to bordetella pertussis. Code 033.1 specifies whooping cough due to bordetella parapertussis. Code 033.8 is a diagnosis of whooping cough due to other specified organism, and code 033.9 is for a diagnosis of whooping cough of unspecified organism. Code 493.82 denotes cough-variant asthma, and code 786.2 denotes cough.
The American College of Emergency Physicians states that the ICD-9 code for cough is the International Classification of Diseases (ninth edition) code for the diagnosis of a cough. The code is primarily used for billing purposes.