ICD-11 Codes
for CA02.10 - Pharyngitis due to Adenovirus

Teodor Jurukovski January 1, 1970

Fact checked by: Teodor Jurukovski

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How Adenovirus Causes Pharyngitis

Pharyngitis due to Adenovirus (ICD-11 code CA02.10) is caused by a group of common viruses known as adenoviruses. These viruses are highly contagious and can spread through various routes. Transmission typically occurs via close personal contact, such as shaking hands, kissing, or hugging. The virus can also spread through the air via respiratory droplets expelled during coughing or sneezing. Touching contaminated surfaces or objects and then touching the eyes, nose, or mouth is another common mode of transmission. In some instances, the virus can spread through an infected person's stool, particularly during diaper changes. While less common, transmission through contaminated water, such as inadequately chlorinated swimming pools, can also occur. Adenoviruses are known for their resilience, being resistant to many common disinfectants, which allows them to remain infectious on surfaces for extended periods. Furthermore, individuals may shed the virus for days or even weeks after recovering from the infection, continuing to pose a transmission risk.

Understanding Pharyngitis Due to Adenovirus

Pharyngitis due to Adenovirus, identified by the ICD-11 code CA02.10, is an inflammation of the throat's mucous membranes and underlying structures. This condition is generally self-limiting. It is frequently accompanied by symptoms such as fever, redness of the pharynx, enlarged tonsils that may have exudate, and swollen cervical lymph nodes. Patients may also experience general malaise, muscle aches (myalgia), and abdominal pain. Adenoviral pharyngitis can also co-occur with other conditions like conjunctivitis (leading to pharyngoconjunctival fever), laryngotracheitis, bronchitis, and pneumonia.

Recognising the Symptoms of Adenoviral Pharyngitis

The presentation of pharyngitis due to Adenovirus can vary, but common signs and symptoms include:

• Fever
• Sore throat
• Redness of the pharynx
• Enlarged tonsils, sometimes with exudate (a coating or discharge)
• Swollen lymph nodes in the neck (cervical adenopathy)
• General malaise or feeling unwell
• Muscle aches (myalgia)
• Headache
• Cough
• Runny nose
• Abdominal pain
• Pink eye (conjunctivitis)

These symptoms often resemble those of a common cold or influenza.

Diagnosing Adenovirus Pharyngitis

The diagnosis of pharyngitis due to Adenovirus (CA02.10) is typically made based on the patient's clinical presentation and symptoms. While laboratory tests can confirm an adenovirus infection, they are not routinely performed for mild cases. If a diagnosis is required, a healthcare provider may collect a sample by swabbing the nose or throat to test for the virus. In situations where a community outbreak is occurring, laboratory testing might be more common.

Managing Adenovirus Pharyngitis

Currently, there are no specific antiviral medications or targeted treatments for adenovirus infections. Management of pharyngitis due to Adenovirus focuses on relieving symptoms. This typically involves supportive care such as ensuring adequate rest and fluid intake. Over-the-counter medications, like fever reducers and pain relievers, can help manage discomfort. It is important to note that antibiotics are ineffective against viral infections like adenovirus. For individuals with severe symptoms or those who are immunocompromised, medical attention is crucial, and hospitalisation may be necessary. In rare, severe cases, antiviral medications such as cidofovir or ribavirin might be considered under medical supervision.

Coding and Documentation for CA02.10

The official ICD-11 code for Pharyngitis due to Adenovirus is CA02.10. This code is used for accurate medical record documentation and billing purposes. Common clinical synonyms for this condition include Adenoviral pharyngitis and sore throat caused by adenovirus. When documenting, healthcare professionals should ensure the diagnosis is clearly stated to align with the CA02.10 code. This specific ICD-11 code helps in tracking the incidence of adenovirus-related throat infections and is reportable for public health surveillance and administrative requirements.