ICD-10-CM Diagnosis Code A02.0: Salmonella enteritis

A02.0

A02.0 is a billable and specific ICD-10-CM code. Accurate coding of A02.0 is essential for ensuring effective patient care and facilitating appropriate reimbursement.

This guide provides detailed insights into its application, official guidelines, and historical background.

ICD-10-CM Diagnosis Code for Salmonella enteritis

The ICD-10-CM Diagnosis code for Salmonella enteritis is A02.0

Salmonella enteritis is an infection caused by Salmonella bacteria, typically affecting the intestinal tract. It is often linked to consuming contaminated food or water.

Proper documentation using A02.0 ensures patients receive appropriate care and enables accurate healthcare reimbursement.

Synonyms:

  • Salmonella gastroenteritis

History Background of ICD-10-CM Diagnosis Code A02.0

The ICD-9-CM system, first introduced in 1979, was the foundation for coding diseases and health-related conditions in the United States.

In the ICD-9-CM classification, A02.0 was represented by code 003.0, which referred to Salmonella enteritis, and this coding remained consistent from 1979 to 2015.

While the ICD-9-CM system offered a basic approach to disease classification, modern healthcare needs more detail and specificity. 

To address this, the ICD-10-CM system was launched in 2015, introducing a more comprehensive and accurate coding structure. 

The transition from ICD-9-CM to ICD-10-CM significantly improved the ability to document and analyze the condition of Salmonella enteritis.

The 2025 edition of ICD-10-CM A02.0 became effective on October 1, 2024.

YEARCODEDESCRIPTION
2020A02.0No Change
2021A02.0No Change
2022A02.0No Change
2023A02.0No Change
2024A02.0No Change
2025A02.0No Change

Symptoms of Salmonella enteritis:

  • Diarrhea (sometimes bloody)
  • Abdominal cramps
  • Nausea
  • Vomiting
  • Fever
  • Chills
  • Headache
  • Muscle aches

How Salmonella Enteritis is Caused 

Salmonella enteritis is caused by consuming contaminated food or water. Common sources include raw meat, poultry, eggs, or unpasteurized dairy. 

After ingestion, the bacteria invade the intestines, causing inflammation and disrupting digestion. In severe cases, the bacteria can spread to the bloodstream and cause serious illness.

Other ICD-10-CM Diagnosis Codes in A02

ICD-10-CM code A02 | Other salmonella infections has following sub categories including A02.0 :

  • A02 Other salmonella infections
  • A02.0 Salmonella enteritis
  • A02.1 Salmonella sepsis
  • A02.2 Localized salmonella infections
  • A02.20 Localized salmonella infection, unspecified
  • A02.21 Salmonella meningitis
  • A02.22 Salmonella pneumonia
  • A02.23 Salmonella arthritis
  • A02.24 Salmonella osteomyelitis
  • A02.25 Salmonella pyelonephritis
  • A02.29 Salmonella with other localized infection
  • A02.8 Other specified salmonella infections
  • A02.9 Salmonella infection, unspecified

Final Thoughts

Proper coding of A02.0 is essential for accurate diagnosis and effective treatment of Salmonella enteritis. For adequate documentation, medical professionals must know its causes, symptoms, and history. This code is key in ensuring appropriate reimbursement and improving patient care.

About Author
content writer
Dr. Sehrish Bano, CPB & CPC

As a certified professional in both billing and coding, I specialize in streamlining healthcare revenue cycles and ensuring accurate claim submissions. With more than five years of experience serving the healthcare industry in the USA, I bring expertise in coding accuracy, compliance, and reimbursement optimization. My work focuses on reducing errors, improving efficiency, and supporting providers in delivering quality care without administrative hurdles. I am committed to helping healthcare organizations achieve financial stability and compliance through reliable billing and coding practices.

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