ICD-10-CM Billable Code

A21.3

Gastrointestinal tularemia

Clinical Classification Guidelines

Inclusion Terms

  • Abdominal tularemia

Medical Intelligence & Overview

Gastrointestinal tularemia, also known as abdominal tularemia, is a rare infectious disease caused by the bacterium Francisella tularensis. It primarily affects the gastrointestinal system, leading to symptoms such as abdominal pain, diarrhea, and sometimes fever. This condition is a form of tularemia, a zoonotic disease that can be transmitted through contact with infected animals, contaminated water, or vectors like ticks. Recognizing the symptoms and understanding the causes can be crucial for diagnosis and management, although medical care should be sought for proper treatment.

Causes & Symptoms

Clinical Causes: Ingestion of contaminated water or food contaminated with Francisella tularensis Handling infected animals, particularly rabbits and rodents Bite from infected ticks or other arthropods Inhalation of aerosolized bacteria in certain occupational settings Contact with contaminated soil or water sources

Key Symptoms: Abdominal pain and tenderness Diarrhea, which may be bloody Fever and chills Nausea and vomiting Loss of appetite General malaise and fatigue Swollen lymph nodes in the abdomen Weight loss in chronic cases

Diagnostic & Treatment

Diagnosis Path: Diagnosis of gastrointestinal tularemia involves a combination of clinical evaluation, history of exposure, and laboratory testing. Blood tests can detect antibodies or the bacteria itself. Polymerase chain reaction (PCR) testing can identify bacterial DNA. Imaging studies like ultrasound or CT scans may be used to assess abdominal organs and identify inflammation or lymphadenopathy. Due to its similarity to other gastrointestinal diseases, specific laboratory testing is essential for confirmation.

Treatment Protocols: Treatment typically involves the use of antibiotics such as streptomycin, gentamicin, doxycycline, or ciprofloxacin. Early initiation of therapy is important to reduce complications. Supportive care includes hydration and management of symptoms. Preventative measures like avoiding contact with potentially contaminated sources and using protective equipment during high-risk activities can help reduce the risk of infection.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is A21.3 a billable ICD-10 code?
Yes, A21.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report A21.3?
Clinical documentation must specify the nature of Gastrointestinal tularemia and any associated comorbidities for accurate reporting.

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