Conversion Table of New ICD-9-CM Codes

Diagnosis Codes Current Code(s)EffectivePrevious Code(s)AssignmentOctober 1Assignment005.811995005.8005.891995005.8007.41997007.8007.52000007.8008.00-008.091992008.0008.43-008.471992008.49008.61-008.691992008.6031.21997031.8038.10-038.111997038.1038.191997038.1040.822002040.89041.00-041.031992041.0041.041992041.0041.04#1997041.04#Code title restated041.051992041.0041.091992041.0041.10-041.191992041.1041.81-041.851992041.8041.861995041.84041.891992041.80421994042.0-042.2, 042.9,*043.0-043.3, 043.9,*044.0, 044.9*(*codes deleted)042.0-042.91986279.19043.0-043.91986279.19044.0-044.91986279.19066.42002066.3070.20-070.211991070.2070.221994070.20070.231994070.21070.30-070.311991070.3070.321994070.30070.331994070.31070.41-070.431991070.4070.441994070.41070...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article is a conversion table for ICD-9-CM diagnosis and procedure coding changes over time. It helps coding professionals, auditors, and documentation staff compare current and prior assignments, understand code-set transitions, and review historical crosswalks for diagnosis and procedure classifications.

Why This Topic Matters

Historical code conversion tables are useful for researching legacy records, validating older claims, and understanding how coding structure changed across revisions. They support accurate retrospective analysis and code mapping work without requiring readers to infer older assignments from memory.

Article Sections

  1. Diagnosis Codes

    A tabular crosswalk of diagnosis code changes over multiple effective dates. It presents historical assignments and code-set transitions for a wide range of ICD-9-CM diagnosis categories.

  2. Procedure Codes

    A tabular crosswalk of procedure code changes over multiple effective dates. It presents historical assignments and code-set transitions for a wide range of ICD-9-CM procedure categories.

What You Will Learn

  • How the article organizes ICD-9-CM diagnosis conversion entries
  • How the article organizes ICD-9-CM procedure conversion entries
  • Which historical code assignments are documented across revision years
  • How legacy code references are grouped for retrospective lookup

Who Should Read This

  • Medical coders
  • Coding auditors
  • Compliance staff
  • Health information management professionals
  • Revenue cycle teams

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