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ICD Hub / Diseases of the ear or mastoid process (H60–H95) / AA00 - Abscess of external ear
ICD-11

ICD-11 Codes
for AA00 - Abscess of external ear
Teodor Jurukovski January 1, 1970
Fact checked by: Teodor Jurukovski
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Other Names for External Ear Abscess

Abscess of the external ear, identified by the ICD-11 code AA00, may also be referred to by several other clinical terms, including abscess of the pinna and abscess of the external auditory canal.

Common Causes of Abscesses in the Outer Ear

The most frequent cause of an abscess of the external ear is infection by Staphylococcus aureus bacteria. While not explicitly detailed for this specific code, related conditions like otitis externa and perichondritis can arise from factors such as ear trauma, irritation, or other infections, creating an environment where bacteria can proliferate.

Understanding Abscess of the External Ear (ICD-11 Code AA00)

Abscess of the external ear, identified by the ICD-11 code AA00, refers to a localized collection of pus and dead tissue within the external auditory canal or the soft tissues of the pinna (outer ear). This condition is typically a result of bacterial infection.

Identifying Signs of an External Ear Abscess

An abscess of the external ear presents as a fluctuant collection of purulent exudate (pus) and necrotic tissue. Patients may experience localized pain, redness, swelling, and tenderness in the affected area of the outer ear or ear canal.

How Abscess of the External Ear is Diagnosed and When to Seek Care

Diagnosis of an abscess of the external ear is typically made through a physical examination by a healthcare professional. They will assess the affected area for signs of infection and pus collection. Patients experiencing significant ear pain, swelling, discharge, or fever should seek prompt medical advice from a GP or other healthcare provider.

Approaches to Treating External Ear Abscesses

Management of an abscess of the external ear usually involves draining the accumulated pus. Antibiotics are commonly prescribed to combat the bacterial infection. In some cases, corticosteroids may also be used. Prompt and appropriate treatment is essential to prevent complications.

ICD-11 Coding for Abscess of the External Ear

The official ICD-11 code for Abscess of external ear is AA00. When documenting this condition, coders may specify laterality (e.g., left, right, bilateral, or unspecified) and precise anatomical location within the external ear, such as the pinna or external auditory canal, using postcoordination options. This ICD-11 code for abscess of external ear is used for accurate medical billing and record-keeping.

Frequently asked questions

What is classified under ICD-11 code AA00?
ICD-11 code AA00 classifies an abscess of the external ear, described as a collection of purulent exudate and necrotic tissue located in the external auditory canal or the soft tissues of the pinna.
How is the laterality of an abscess of the external ear specified in ICD-11 coding?
ICD-11 allows for post-coordination to specify laterality for an abscess of the external ear using codes such as 'Left', 'Right', 'Bilateral', or 'Unilateral, unspecified'.
What are the synonyms for ICD-11 code AA00, Abscess of external ear?
Synonyms for AA00 include Abscess of pinna and Abscess of external auditory canal.
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