ICD-10 Code for Whooping Cough
The ICD-10-CM code for whooping Cough is A37.90 — Whooping cough, unspecified species without pneumonia. This is the code the Alphabetic Index gives for whooping Cough with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
A37.90 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which whooping Cough code should you use?
The Alphabetic Index lists 8 codes under Whooping cough. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| with pneumonia | A37.91 | Whooping cough, unspecified species with pneumonia |
Whooping Cough with pneumonia
| specified organism NEC | A37.81 | Whooping cough due to other Bordetella species with pneumonia |
| due to Bordetella › bronchiseptica | A37.81 | Whooping cough due to other Bordetella species with pneumonia |
| due to Bordetella › parapertussis | A37.11 | Whooping cough due to Bordetella parapertussis with pneumonia |
| due to Bordetella › pertussis | A37.01 | Whooping cough due to Bordetella pertussis with pneumonia |
Whooping Cough due to
| Bordetella › bronchiseptica | A37.80 | Whooping cough due to other Bordetella species without pneumonia |
| Bordetella › parapertussis | A37.10 | Whooping cough due to Bordetella parapertussis without pneumonia |
| Bordetella › pertussis | A37.00 | Whooping cough due to Bordetella pertussis without pneumonia |
| Bordetella › specified NEC | A37.80 | Whooping cough due to other Bordetella species without pneumonia |
| Bordetella › bronchiseptica › with pneumonia | A37.81 | Whooping cough due to other Bordetella species with pneumonia |
| Bordetella › parapertussis › with pneumonia | A37.11 | Whooping cough due to Bordetella parapertussis with pneumonia |
| Bordetella › pertussis › with pneumonia | A37.01 | Whooping cough due to Bordetella pertussis with pneumonia |
| Bordetella › specified NEC › with pneumonia | A37.81 | Whooping cough due to other Bordetella species with pneumonia |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources