AHA Coding Clinic® for ICD-9 - 2012 Issue 4
Conversion Table of New ICD-9-CM Codes, October 2012
The National Center for Health Statistics (NCHS) and the Centers for Medicare & Medicaid Services (CMS) 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 CMS. 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...
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Article Overview
This article is a historical ICD-9-CM reference that compiles new diagnosis and procedure code assignments and their earlier code equivalents. It is intended for coders, auditors, analysts, and other users who need to track code changes over time for data retrieval, mapping, and longitudinal review. The article covers both diagnosis and procedure sections and includes year-based updates and related notes where shown in the table.
Why This Topic Matters
It helps users understand how ICD-9-CM code changes were mapped across years, which is important for historical reporting, database retrieval, and comparing records across different code vintages.
Article Sections
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Diagnosis Codes
A table of diagnosis code updates organized by current code, effective year, and prior code equivalent. It includes year-based assignments and occasional notes tied to the listed mappings.
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Procedure Codes
A table of procedure code updates organized by current code, effective year, and prior code equivalent. It presents historical assignments and related notes in the same conversion-table format.
What You Will Learn
- How the article organizes ICD-9-CM diagnosis and procedure code conversions
- What kinds of historical mapping information are included in the conversion table
- How effective dates are presented for updated ICD-9-CM codes
- What types of reference notes may accompany certain listed code changes
Who Should Read This
- Medical coders
- Coding auditors
- Health information management professionals
- Clinical data analysts
- Revenue cycle staff
- Researchers working with historical claims data
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