ICD-10-CM Billable Code

A04.3

Enterohemorrhagic Escherichia coli infection

Clinical Classification Guidelines

Medical Intelligence & Overview

Enterohemorrhagic Escherichia coli (EHEC) infection is caused by a specific strain of bacteria called Escherichia coli, which can lead to severe gastrointestinal illnesses. This infection is notable for causing bloody diarrhea and, in some cases, can result in serious complications such as hemolytic uremic syndrome (HUS). Understanding the causes, symptoms, and available treatments can help in managing and preventing the spread of this infection.

Causes & Symptoms

Clinical Causes: Consuming contaminated food, especially undercooked ground beef Contaminated produce such as lettuce and spinach Drinking unpasteurized milk or juice Contact with infected individuals or animals, particularly livestock Poor hygiene practices, including inadequate handwashing after using the toilet or handling raw meat

Key Symptoms: Watery diarrhea that may turn bloody Stomach cramps and abdominal pain Nausea and vomiting Fever, typically low-grade Fatigue and weakness in severe cases Complications such as hemolytic uremic syndrome (HUS), leading to kidney failure

Diagnostic & Treatment

Diagnosis Path: Diagnosis primarily involves stool tests to detect the presence of EHEC bacteria. Culturing the bacteria from stool samples helps confirm the infection. Additional tests may include blood tests to assess kidney function, especially if complications are suspected. Imaging studies are rarely necessary but may be performed if severe symptoms or complications arise.

Treatment Protocols: Treatment focuses on alleviating symptoms and preventing dehydration, usually through supportive care. Antibiotics are generally not recommended for EHEC infections because they can increase the risk of complications like HUS. Patients are encouraged to rest, maintain hydration, and follow medical advice. In severe cases, hospitalization and advanced treatments such as dialysis may be necessary.

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 A04.3 a billable ICD-10 code?
Yes, A04.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report A04.3?
Clinical documentation must specify the nature of Enterohemorrhagic Escherichia coli infection and any associated comorbidities for accurate reporting.

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