ICD-10 Code A37.80 – Whooping cough due to other Bordetella species without pneumonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A37.80 – Whooping cough due to other Bordetella species without pneumonia
What it is
This code identifies pertussis caused by Bordetella species other than B. pertussis, with no documented pneumonia. Use it when the record specifies an alternate Bordetella cause and does not show lung involvement.
Clinical signs
Typical whooping cough features include paroxysmal coughing fits, post-tussive vomiting, or an inspiratory “whoop.” Clinical features vary; refer to documentation for the organism and whether pneumonia is absent.
When to use this code
Use A37.80 when the provider documents whooping cough due to another Bordetella species and explicitly states there is no pneumonia. It also fits confirmed pertussis cases where the organism is identified as a non-pertussis Bordetella species. If the chart does not name the species, check documentation before coding.
Do not use for
Do not use this code for pertussis with pneumonia, which requires a different code. Do not assume it applies to unspecified whooping cough or to cough illnesses caused by other organisms.
Coding tip
Verify both the Bordetella species and the absence of pneumonia in the record before assigning A37.80.