AHA Coding Clinic® for ICD-9 - 2004 Issue 4; VOLUMES 1 AND 2 NEW/REVISED DIAGNOSIS CODES
Allergic Rhinitis Due to Animal Hair and Dander
Effective October 1, 2004, code 477.2, Allergic rhinitis, Due to animal (cat) (dog) hair and dander, has been created to uniquely identify allergic rhinitis due to animal hair and dander (dandruff-like skin cells). Allergic rhinitis is the immune system’s response to noninfectious particles such as pollen, mold, dust, animal hair, food, chemicals, and smoke. During an allergic attack, antibodies attach to mast cells that release histamine. The release of histamine and other chemicals into the bloodstream lead to irritation and swelling of the mucous membranes. Common symptoms of allergic rhinitis include sneezing, stuffy or runny...
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Article Overview
This article covers a coding update effective October 1, 2004 related to allergic rhinitis and animal hair/dander exposure. It is relevant to coding professionals and clinical staff who need to understand the scope of the change, the condition being classified, and the general clinical context discussed in the article.
Why This Topic Matters
It helps readers recognize that a specific diagnosis category was created for a particular allergic rhinitis presentation and understand the article’s coding context without relying on the premium content.
What You Will Learn
- What the article says about the code update effective October 1, 2004
- How the article frames allergic rhinitis in general clinical terms
- Which diagnosis category is being discussed in relation to animal hair and dander
- What broad symptom and treatment context is associated with the condition
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation staff
- Health information management professionals
Codes Discussed
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