A37 – Whooping cough
ICD-10-CM 2027 diagnosis code · Other bacterial diseases
ICD-10-CM code
A37
- Code
A37(claims format:A37)- Description
- Whooping cough
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A30-A49 Other bacterial diseases
Billable codes under A37
A37 is a header code and cannot be used on claims. Choose the most specific code:
- A37.0 – Whooping cough due to Bordetella pertussisHeader (more codes below)
- A37.1 – Whooping cough due to Bordetella parapertussisHeader (more codes below)
- A37.8 – Whooping cough due to other Bordetella speciesHeader (more codes below)
- A37.9 – Whooping cough, unspecified speciesHeader (more codes below)
Frequently asked questions
What is ICD-10 code A37?
A37 is the ICD-10-CM code for whooping cough, in the block A30-A49 (Other bacterial diseases).
Is A37 a billable code?
No. A37 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.