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ICD 9 CM Code Set

Case2Code offers a complete ICD-9-CM solution, providing official descriptions, structured hierarchy navigation, crosswalks to ICD-10-CM & HCPCS, and historical updates—ensuring compliance and accuracy for legacy data.

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ICD 9 Code Set

What’s Included?

The ICD-9-CM Code Set on Case2Code ensures that coders, billers, and researchers can retrieve, compare, and analyze legacy coding data.

Official ICD-9-CM Descriptions

Access accurate, detailed ICD-9-CM definitions for historical reference.

Common Language (Coming Soon)

Read simplified descriptions to make complex codes easier to interpret.

Code Data Insights

View short descriptions and classification details for ICD-9-CM codes.

Chapter & Section Hierarchy

Navigate the ICD-9-CM structure with categorized breakdowns for neoplasms, diseases, and conditions.

Historical Code Versions

Track ICD-9-CM changes, previous descriptions, and classification updates over time.

Crosswalks to Other Code Sets

Seamlessly convert ICD-9-CM codes into ICD-10-CM and HCPCS equivalents for modern billing and compliance.

Trusted by Over 140,000 Medical Professionals & Organizations

Join thousands of healthcare providers who rely on Case2Code for accurate coding, faster workflows, and reduced claim denials.

Number of Active Monthly Users

140,000

Codes in our Databse

230,000

Faster Coding Workflows

36%

Reduce in Denials

42%

Benefits

Why Case2Code is the Best ICD-9-CM Coding Resource

Healthcare professionals and researchers trust Case2Code for historical ICD-9-CM data, ensuring accuracy and smooth transitions to ICD-10-CM and HCPCS.

Easily Convert ICD-9-CM Codes to ICD-10-CM & HCPCS

Use our crosswalks to map ICD-9-CM to ICD-10-CM & HCPCS for compliance.

Accurate Data for Claims & Audits

Quickly retrieve legacy codes for audits, appeals, and historical claim analysis.

Structured Hierarchical Navigation

Navigate ICD-9-CM’s categorized system with clear sections and classifications.

Track Legacy Code Changes

Review historical ICD-9-CM versions and classification updates for accurate reporting.

Save & Organize Notes for Reference

Attach personal documentation and research notes to ICD-9-CM codes for future use.

Fast & Reliable Search Tools

Locate ICD-9-CM codes instantly with advanced filtering and hierarchy-based navigation.

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Create a free account and access up to 5 searches per day with essential medical coding tools.

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  • All Code Sets
  • Search & Filters
  • Lay Term Descriptions
  • Crosswalk & Mappings
  • Code Data Insights
  • Modifier Assist
  • Notes & Favorites
  • History & Updates

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Frequently Asked Questions (FAQ) About The ICD-9-CM Code Set

Case2Code provides official ICD-9-CM descriptions, historical classifications, structured hierarchy navigation, and crosswalks to ICD-10-CM & HCPCS.

Easily navigate ICD-9-CM codes using categorized sections, classifications, and structured breakdowns for diseases and conditions.

Yes! ICD-9-CM codes are mapped to ICD-10-CM and HCPCS to assist with legacy billing and compliance needs.