ICD-10 Code A37.8 – Whooping cough due to other Bordetella species (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A37.8 – Whooping cough due to other Bordetella species
What it is
A37.8 identifies pertussis caused by Bordetella species other than B. pertussis or B. parapertussis. Use it when the record states whooping cough from another Bordetella organism.
Clinical signs
Clinical features vary; refer to documentation. Typical pertussis includes paroxysmal cough, inspiratory whoop, and posttussive vomiting, but the exact organism should be identified when available.
When to use this code
Use this code when the provider documents whooping cough due to an “other” Bordetella species, such as a nonstandard species or a lab-confirmed Bordetella not otherwise specified. It also fits when the chart clearly distinguishes the organism from B. pertussis and B. parapertussis. Check documentation if the species is not named.
Do not use for
Do not use A37.8 for pertussis due to Bordetella pertussis or Bordetella parapertussis. If the record only says “whooping cough” without organism detail, check documentation before assigning this code.
Coding tip
Code the organism exactly as documented; if the species is unspecified, query the provider rather than assuming A37.8.