A medical code set maintained by the World Health Organization (WHO). The primary purpose of this code set was to classify causes of death. A US extension of this coding system, maintained by the NCHS within the CDC, identifies morbidity factors, or diagnoses. The ICD-9-CM codes have been selected for use in the HIPAA transactions. 

How the abbreviation ICDnCM/PCS breaks down:ICD = International Classification of Diseasesn = revision number CM = Clinical ModificationPCS = Procedure Coding System 

Related Terms: Clinical Modification International Classification of Diseases, Revision 9, Clinical ModificationNational Center for Health Statistics Procedure Coding System World Health Organization

International Classification of Diseases, Revision 9, Clinical Modification (ICD-9-CM)

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