2027 ICD-10-CM Diagnosis Code A37Whooping cough

ICD-10-CM Codes›A00–B99›A30-A49›A37

ICD-10-CM A37
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Whooping cough
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A37: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • 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)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name A37, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming A37: they are not reported together with it, unless the two conditions are unrelated.

  • J17 Pneumonia in diseases classified elsewhere
    whooping cough with pneumonia (A37 with fifth-character 1)

Clinical InformationClinical

  • Whooping Cough

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

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A37Overview

What is the ICD-10 code for whooping cough?

A37 is the ICD-10-CM category for whooping cough, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.