2025 ICD-10-CM code A08.11
(Active) Effective Date: N/A Revision Date: N/A Deletion Date: N/A Intestinal infectious diseases - Acute gastroenteropathy due to Norwalk agent and other small round viruses Certain infectious and parasitic diseases (A00-B99) Feed
Acute gastroenteropathy caused by the Norwalk virus (also known as norovirus).
Medical necessity is established based on the presence of symptoms consistent with acute norovirus gastroenteritis, confirmed or supported by laboratory findings or epidemiological context.Treatment is necessary for symptom management and prevention of complications, such as dehydration.
Diagnosis is based on patient symptoms, history, and physical examination. Laboratory tests may be used to confirm the diagnosis and rule out bacterial or parasitic infections. Treatment focuses on supportive care, primarily rehydration with oral or intravenous fluids. Patient education on prevention measures, such as proper hand hygiene and food safety, is important.
- Certain infectious and parasitic diseases (A00-B99)
- A08 Viral and other specified intestinal infections
In simple words: This code describes a stomach and intestinal illness caused by the norovirus, often spread through contaminated food or water, or by contact with an infected person. Symptoms can include diarrhea, stomach pain, nausea, vomiting, fever, dehydration, and body aches. Treatment usually involves drinking plenty of fluids to prevent dehydration.
A08.11, Acute gastroenteropathy due to Norwalk agent, is an ICD-10-CM code that classifies acute inflammation of the stomach and intestines caused by the Norwalk virus (also known as norovirus).This viral infection is typically transmitted through contaminated food or water or by person-to-person contact.Clinical presentation includes diarrhea, abdominal pain, nausea, vomiting, fever, dehydration, body aches, and headache. Diagnosis is based on symptoms, history, and physical examination, with laboratory tests used to rule out other causes. Treatment focuses on rehydration.Antibiotics are ineffective against viral infections.
Example 1: A 25-year-old presents with acute onset of vomiting, diarrhea, and abdominal cramps. The patient reports consuming oysters at a restaurant 24 hours prior.A08.11 is coded as the primary diagnosis after ruling out bacterial causes., A 60-year-old with a history of Crohn's disease experiences a severe exacerbation of symptoms, including vomiting, diarrhea, and dehydration.Laboratory tests reveal norovirus infection. A08.11 is coded as the principal diagnosis, with the appropriate code for Crohn's disease listed as a secondary diagnosis., An outbreak of norovirus occurs in a nursing home. Several residents present with acute gastroenteritis. A08.11 is coded as the principal diagnosis for each affected resident.
Detailed history of present illness, including onset, duration, and severity of symptoms; details regarding potential exposures (e.g., contaminated food or water, contact with infected individuals); physical examination findings; laboratory results (if performed); treatment provided; and patient education given.
** Norovirus is highly contagious.Outbreaks in communal settings (e.g., schools, nursing homes, cruise ships) are common.Proper infection control measures are crucial to prevent transmission.
- Payment Status: Active
- Specialties:Gastroenterology, Infectious Disease
- Place of Service:Office, Hospital Inpatient, Hospital Outpatient, Urgent Care Facility, Emergency Room - Hospital