A37 — Whooping cough
Is A37 billable?
No — A37 is a non-billable header code. A37 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 8 billable codes beneath A37.
Billable codes under this header
- A37.00Whooping cough due to Bordetella pertussis without pneumonia
- A37.01Whooping cough due to Bordetella pertussis with pneumonia
- A37.10Whooping cough due to Bordetella parapertussis without pneumonia
- A37.11Whooping cough due to Bordetella parapertussis with pneumonia
- A37.80Whooping cough due to other Bordetella species without pneumonia
- A37.81Whooping cough due to other Bordetella species with pneumonia
- A37.90Whooping cough, unspecified species without pneumonia
- A37.91Whooping cough, unspecified species with pneumonia
A37 at a glance
| Code | A37 |
|---|---|
| Description | Whooping cough |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code — inherited from Chapter 1
Report an additional code alongside A37 to fully describe the condition. A37 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of A37, but a patient may have both at the same time. When documentation supports it, A37 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
What codes fall under A37? (4)
How long has A37 existed?
A37 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with A37?
ICD-10-CM declares these codes mutually exclusive with A37 — exactly one of each pair can be correct for a given encounter.