What is the difference between ICD-9 and ICD-9-CM?

ICD-9

See also: List of ICD-9 codes

The ICD-9 was published by the WHO in 1977. According to the World Health Organization Department of Knowledge Management and Sharing, the WHO no longer publishes or distributes the ICD-9 which is now public domain.[5]

ICD-9-CMInternational Classification of Diseases, Clinical Modification (ICD-9-CM) is a classification used in assigning codes to diagnoses associated with inpatient, outpatient, and physician office utilization in the U.S. The ICD-9-CM is based on the ICD-9 but provides for additional morbidity detail and is annually updated on October 1.[6] It was created by the U.S. National Center for Health Statistics as an extension of ICD-9 system so that it can be used to capture more morbidity data and a section of procedure codes was added.[7]

It consists of two or three volumes:

• Volumes 1 and 2 contain diagnosis codes. (Volume 1 is a tabular listing, and volume 2 is an index.) Extended for ICD-9-CM
• Volume 3 contains procedure codes. ICD-9-CM only

The National Center for Health Statistics (NCHS) and the Centers for Medicare and Medicaid Services are the U.S. governmental agencies responsible for overseeing all changes and modifications to the ICD-9-CM.

Currently, people and healthcare and medical facilities are waiting and preparing for the update. ICD 10 is said to be launched by 2014.