ICD-10-CM Diagnosis Code A03.2: Shigellosis due to Shigella boydii

A03.2

A03.2 is a billable and specific ICD-10-CM code. Accurate coding of A03.2 ensures proper diagnosis, effective treatment, and correct reimbursement.

This guide provides key details about its use, official guidelines, and historical background.

ICD-10-CM Code for Shigellosis due to Shigella boydii

The ICD-10-CM Diagnosis Code for Shigellosis caused by Shigella boydii is A03.2.


Shigella boydii is a gram-negative, non-motile bacterium causing intestinal infection (shigellosis). It invades colon cells, causing inflammation and symptoms like diarrhea, pain, and fever.


Proper documentation using A03.2 ensures patients receive appropriate care and enables accurate healthcare reimbursement.

Synonyms:

  • Infection due to group c shigella

History Background of ICD-10-CM Diagnosis Code A03.2

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

The ICD-9-CM code for Shigellosis due to Shigella flexneri is 004.2. This coding remained consistent from 1979 to 2015.

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

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 conditions like shigellosis due to Shigella boydii.

The 2025 edition of ICD-10-CM A03.2 became effective on October 1, 2024.

YEARCODEDESCRIPTION
2020A03.2No Change
2021A03.2No Change
2022A03.2No Change
2023A03.2No Change
2024A03.2No Change
2025A03.2No Change

Symptoms of Shigellosis due to Shigella boydii

  • Watery or bloody diarrhea
  • Abdominal pain and cramping
  • High fever
  • Loss of appetite
  • Fatigue from dehydration
  • Pain during bowel movements

How Shigellosis due to Shigella boydii is Caused

Shigellosis occurs when Shigella boydii bacteria infect the intestines. Common causes include:

  • Consuming contaminated food or water
  • Contact with infected individuals or surfaces
  • Poor sanitation and hygiene
  • Crowded or unsanitary living conditions

Other ICD-10-CM Diagnosis Codes in A03

ICD-10-CM code A03 | Shigellosis has following sub categories including A03.2 :

  • A03 Shigellosis.
  • A03.0 Shigellosis due to Shigella dysenteriae.
  • A03.1 Shigellosis due to Shigella flexneri.
  • A03.2 Shigellosis due to Shigella boydii.
  • A03.3 Shigellosis due to Shigella sonnei.
  • A03.8 Other shigellosis.
  • A03.9 Shigellosis, unspecified.

Final Thoughts

Proper coding of A03.2 is essential for diagnosing and managing Shigellosis due to Shigella boydii. Understanding its symptoms, causes, and coding guidelines ensures accurate documentation and better patient outcomes. This code supports effective care and accurate reimbursement.

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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