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ICD Hub / Diseases of the ear or mastoid process (H60–H95) / AA3Z - Otitis externa, unspecified
ICD-11

ICD-11 Codes
for AA3Z - Otitis externa, unspecified
Teodor Jurukovski January 1, 1970
Fact checked by: Teodor Jurukovski
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What is Otitis Externa, Unspecified (ICD-11 Code AA3Z)?

Otitis externa, identified by the ICD-11 code AA3Z, refers to an inflammation of the external auditory canal. This condition is also commonly known by synonyms such as swimmer's ear or external otitis. It signifies an inflammatory process affecting the outer part of the ear canal, where the specific cause or type is not otherwise specified.

Recognising the Symptoms of Otitis Externa, Unspecified

Individuals experiencing otitis externa, unspecified may present with several symptoms. These commonly include ear pain, itching within and around the ear canal, redness, and swelling. A feeling of pressure or fullness inside the ear can also occur, alongside discharge from the ear canal, which may be thin and watery or thick and pus-like. Tenderness when moving the ear or jaw, and sometimes temporary hearing loss, are also characteristic. Typically, only one ear is affected.

Understanding the Causes and Risk Factors

Otitis externa, unspecified can stem from various factors. Bacterial and fungal infections are frequent culprits, but irritation and allergic reactions can also lead to inflammation. Key risk factors that increase susceptibility include increased exposure to water, such as from swimming or high humidity, which can disrupt the ear canal's natural environment. Trauma to the ear canal, whether from scratching or inserting objects like cotton buds, can damage the skin lining. Underlying skin conditions, such as eczema or dermatitis, and having narrow ear canals are also contributing factors.

How Otitis Externa, Unspecified is Diagnosed

Diagnosis of otitis externa, unspecified is generally made by healthcare professionals based on a patient's reported symptoms and a physical examination of the ear canal. An otoscope is often used to visualise the affected area. In instances where the condition is recurrent or does not respond to initial treatment, a swab of the ear canal may be taken. This sample is then tested to help identify the specific type of infection, guiding the selection of appropriate medication.

Management and Treatment Approaches

While some mild cases of otitis externa may resolve on their own over several weeks, medical intervention is often necessary. Self-care measures can include keeping the affected ear dry, avoiding water sports until symptoms clear, and using over-the-counter pain relievers like paracetamol or ibuprofen for discomfort. Gentle cleaning of the outer ear with cotton wool is also advised. Prescription ear drops, which may contain antibiotics, antifungals, or steroids, are commonly prescribed by pharmacists or GPs to combat infection and reduce inflammation. For severe or persistent cases, referral to a specialist may be considered.

Coding and Documentation for Otitis Externa, Unspecified

For accurate medical billing and clinical documentation, the official ICD-11 code for this condition is AA3Z, with the corresponding name being Otitis externa, unspecified. This code is utilised when the specific type or causative agent of the external ear inflammation is not detailed in the medical record. Common clinical synonyms such as swimmer's ear and external otitis are frequently associated with this diagnosis, making it important for healthcare providers to use the precise ICD-11 terminology for reporting purposes.

Frequently asked questions

What is the ICD-11 classification for AA3Z?
AA3Z is the ICD-11 code for Otitis externa, unspecified.
When should the ICD-11 code AA3Z be used?
AA3Z is used when the condition is identified as otitis externa, but the specific details or type of otitis externa are not documented.
Can additional details be added to the ICD-11 code AA3Z?
Yes, post-coordination can be used with AA3Z to specify laterality (e.g., left, right, bilateral) and the specific anatomical part of the external ear affected.
How does AA3Z differ from other otitis externa codes in ICD-11?
AA3Z is used for unspecified otitis externa, whereas other codes within the AA10-AA3Z range may specify noninfectious inflammation or other specified types of otitis externa.
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