AHA Coding Clinic® for ICD-9 - 2001 Fourth Quarter
Conversion Table of New ICD-9-CM Codes
The National Center for Health Statistics (NCHS) and the Health Care Financing Administration (HCFA) have issued new diagnosis and procedure codes for the International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) every year since 1986. New code assignments are the result of year-long efforts of the ICD-9-CM Coordination and Maintenance Committee, which is sponsored jointly by NCHS and HCFA. The effective date for new codes is the same every year, October 1. The Conversion Table for new ICD-9-CM Codes is provided to assist users in data retrieval. For each new code the table shows the date it became...
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Article Overview
This article compiles annual ICD-9-CM diagnosis and procedure code changes and provides a conversion table linking newly assigned codes to prior equivalents. It is useful for coding professionals, health information managers, researchers, and anyone working with legacy diagnosis or procedure data who needs to understand what changed across revision years and how the update tables are organized. The article also notes the organizations involved, the annual effective date, and a list of select new or revised diagnosis code topics.
Why This Topic Matters
Legacy ICD-9-CM records often require crosswalks when comparing data across years, and this article serves as a historical reference for that purpose. It helps users understand the scope of annual code updates without needing to consult each year’s revision separately.
Article Sections
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Overview of annual ICD-9-CM code updates
Introduces the annual update process for ICD-9-CM diagnosis and procedure codes and identifies the organizations involved in maintaining the code set.
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Conversion tables for diagnosis codes
Presents the diagnosis-code portion of the conversion table, organized by current assignment, effective date, and prior assignment.
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Conversion tables for procedure codes
Presents the procedure-code portion of the conversion table, organized by current assignment, effective date, and prior assignment.
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Volume 1 and 2 new/revised diagnosis codes
Lists selected diagnosis topics that were newly assigned or revised in the referenced update cycle.
What You Will Learn
- How annual ICD-9-CM updates are organized
- What the article’s conversion tables are intended to support
- How the article distinguishes diagnosis and procedure code update information
- What general kinds of diagnosis topics were added or revised in the update cycle
Who Should Read This
- Medical coders
- Coding auditors
- Health information management professionals
- Clinical documentation staff
- Healthcare data analysts
- Researchers working with historical claims or registries
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