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Sylvia was seen in the office and was diagnosed with acute bronchitis with Chronic Obstructive Pulmonary Disease. What is the correct ICD-9 diagnosis code for her condition?
  1. 466.0
  2. 491.22
  3. 466.0, 491.22
  4. 491.21
Explanation
Answer: B - The correct ICD-9 diagnosis code for Sylvia’s condition is 491.22. According to ICD-9 coding guidelines, only code 491.22 (Obstructive Chronic Bronchitis with Acute Bronchitis) should be assigned. It is not necessary to also assign code 466.0 (Acute Bronchitis). In addition, code 491.21 (Obstructive Chronic Bronchitis with Acute Exacerbation) is inappropriate because it only indicates an exacerbation of the chronic bronchitis, not acute bronchitis.
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