2026 ICD-10-CM Diagnosis Code A37Whooping cough

ICD-10-CM Codes›A00–B99›A30-A49›A37

ICD-10-CM A37
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A37 is a non-billable ICD-10-CM category code for whooping cough, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A37.00, A37.01, A37.10, and A37.11.

Code Identity

ICD-10-CM Code
A37
Billable Status
No — Non-Billable Category
Code Describes
Whooping cough
Chapter
A30-A49
Other bacterial diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA30-A49Other bacterial diseases
CategoryA37Whooping cough
This CodeA37Whooping cough

Specific Coding for Whooping coughOverview

Non-specific codes like A37 require more characters. Use one of these billable codes instead:

  • A37.0 for Whooping cough due to Bordetella pertussis

  • Use A37.00 for Whooping cough due to Bordetella pertussis without pneumonia

  • Use A37.01 for Whooping cough due to Bordetella pertussis with pneumonia

  • A37.1 for Whooping cough due to Bordetella parapertussis

  • Use A37.10 for Whooping cough due to Bordetella parapertussis without pneumonia

  • Use A37.11 for Whooping cough due to Bordetella parapertussis with pneumonia

  • A37.8 for Whooping cough due to other Bordetella species

  • Use A37.80 for Whooping cough due to other Bordetella species without pneumonia

  • Use A37.81 for Whooping cough due to other Bordetella species with pneumonia

  • A37.9 for Whooping cough, unspecified species

  • Use A37.90 for Whooping cough, unspecified species without pneumonia

  • Use A37.91 for Whooping cough, unspecified species with pneumonia

Clinical InformationClinical

  • Whooping Cough

    a respiratory infection caused by bordetella pertussis and characterized by paroxysmal coughing ending in a prolonged crowing intake of breath.

  • Bordetella pertussis

    a species of gram-negative, aerobic bacteria that is the causative agent of whooping cough. its cells are minute coccobacilli that are surrounded by a slime sheath.

Patient EducationClinical

Whooping Cough

Whooping cough, or pertussis, is a respiratory infection that can cause coughing fits. In serious cases, the coughing can become violent and rapid. You may cough so hard that you vomit. The name of the disease comes from the whooping noise you might make when you try to breathe in after coughing.

The full article covers:

  • What is whooping cough?
  • What causes whooping cough?
  • What are the symptoms of whooping cough?
  • How is whooping cough diagnosed?
  • What are the treatments for whooping cough?
  • Can whooping cough be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A37Overview

Is A37 (Whooping cough) a billable code?

No. This is a category header that groups the codes for whooping cough, and headers cannot be submitted on claims. Claims for whooping cough need a more specific code from this category, such as A37.00, A37.01, and A37.10.