The materials included here provide references and background information on International Classification of Diseases, Tenth Revision, Clinical Modification/Procedure Coding System (ICD-10-CM/PCS), as well as information for the public from the U.S. Department of Health and Human Services (HHS) and Centers for Disease Control and Prevention (CDC).

Quick View Comparison of ICD-9-CM and ICD-10-CM/PCS

What You Need to Know

• Public Health Transition to ICD-10-CM/PCS
• phConnect Collaboration for Public Health

Presentations:

• Transitioning to ICD-10-CM and ICD-10-PCS presentation by Donna Pickett, co-chair of the CDC ICD-10 Transition Workgroup, March 2014

Articles on Transitioning to New Classification Systems for ICD

• Comparability ratios for ICDA-8 and ICD-9-CM This report describes changes in the diagnostic coding classification system between ICDA-8 and ICD-9-CM and provides comparability ratios that can be used to estimate trends over time.



• Comparability of cause-of-death between ICD revisions Studies are routinely done to compare revisions of ICD classifications of the cause of death. The Centers for Disease Control and Prevention (CDC) National Center for Health Statistics (NCHS), National Vital Statistics System provides source documents and reports comparing classification schemas as well as statistical methods for calculating trends in mortality using various classification schemes.