AHA Coding Clinic® for ICD-9 - 2001 Fourth Quarter
Acute Laryngitis
Within category 464, Acute laryngitis and tracheitis; acute tracheitis, acute laryngotracheitis and acute epiglottitis differentiate between "with or without mention of obstruction." Effective October 1, 2001, code 464.0, Acute laryngitis is expanded to parallel this structure. 464.0 Acute laryngitis New code 464.00 Without mention of obstruction New code 464.01 With obstruction ...
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Article Overview
This short coding update focuses on an ICD-9-CM category change involving acute laryngitis within the broader acute laryngitis and tracheitis category. It is relevant to coders, compliance staff, and billing teams who track diagnosis code updates and structure changes effective in 2001.
Why This Topic Matters
It helps readers understand a diagnosis coding revision and how the affected code family was reorganized, which is important for accurate historical coding reference and retrospective record review.
What You Will Learn
- How the acute laryngitis diagnosis category was updated
- How the article frames the affected ICD-9-CM code family
- What effective date is associated with the change
- How the update relates to the broader category structure
Who Should Read This
- Medical coders
- Coding auditors
- Billing staff
- Compliance professionals
- Revenue cycle staff
Codes Discussed
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