AHA Coding Clinic® for ICD-9 - 2005 Issue 4; VOLUMES 1 AND 2 NEW/REVISED CODES
Asphyxia and Hypoxemia
Effective October 1, 2005, code 799.0 Asphyxia, has been expanded to separately identify asphyxia (799.01) and hypoxemia (799.02). Asphyxia is a condition of severely deficient supply of oxygen to the body. Hypoxemia is deficient oxygenation of the blood. Low oxygen levels can be present without asphyxiation. New codes have been created to differentiate between these two conditions. Note that asphyxia and hypoxemia due to hypercapnia should be coded to 786.09, Symptoms involving respiratory system and other chest symptoms, Other. 799 Other ill-defined and unknown causes of morbidity and mortality Revise 799.0 Asphyxia and hypoxemia...
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Article Overview
This coding update article covers an ICD-9-CM revision effective October 1, 2005. It explains the restructuring of a diagnosis category, the creation of separate codes for two related conditions, and an exclusion reference tied to a respiratory symptom category. The article is relevant to coders and billing staff who work with diagnosis code changes and respiratory-related documentation.
Why This Topic Matters
Changes to diagnosis code structure can affect code selection, claim accuracy, and consistency in reporting respiratory and oxygenation-related conditions. Understanding the update helps coders recognize when the revised categories apply and where related conditions are directed.
What You Will Learn
- How the diagnosis category was revised in the ICD-9-CM update
- Which broad respiratory-related conditions were separated into distinct codes
- What related exclusion reference is noted in the update
- The effective date associated with the coding change
Who Should Read This
- Medical coders
- Coding auditors
- Billing staff
- Compliance teams
- Clinical documentation specialists
Codes Discussed
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