The ICD-10 Clinical Modification (ICD-10-CM) is a modification of the ICD-10, authorized by the World Health Organization, used as a source for diagnosis codes in the United States of America. It replaces the earlier ICD-9-CM.
Adoption of ICD-10-CM was slow in the United States. Since 1979, the US had required ICD-9-CM codes for Medicare and Medicaid claims, and most of the rest of the American medical industry followed suit. On 1 January 1999 the ICD-10 (without clinical extensions) was adopted for reporting mortality, but ICD-9-CM was still used for morbidity. Meanwhile, the U.S. National Center for Health Statistics (NCHS) received permission from the WHO to create a clinical modification of the ICD-10, and has production of all these systems:
- ICD-10-CM, for diagnosis codes, replaces volumes 1 and 2. Annual updates are provided.
- ICD-10-PCS, for procedure codes, replaces volume 3. Annual updates are provided.
On 21 August 2008, the US Department of Health and Human Services (HHS) proposed new code sets to be used for reporting diagnoses and procedures on health care transactions. Under the proposal, the ICD-9-CM code sets would be replaced with the ICD-10-CM code sets, effective 1 October 2013. On 17 April 2012 the Department of Health and Human Services (HHS) published a proposed rule that would delay, from 1 October 2013 to 1 October 2014, the compliance date for the ICD-10-CM and PCS. Once again, Congress delayed implementation date to 1 October 2015, after it was inserted into "Doc Fix" Bill without debate over objections of many.
Revisions to ICD-10-CM include:
- Relevant information for ambulatory and managed care encounter.
- Expanded injury codes.
- New combination codes for diagnosis/symptoms to reduce the number of codes needed to describe a problem fully.
- Addition of sixth and seventh digit classification.
- Classification specific to laterality.
- Classification refinement for increased data granularity.
- Cartwright, Donna J. (December 2013). "ICD-9-CM to ICD-10-CM Codes: What? Why? How?". Advances in Wound Care. 2 (10): 588–592. doi:10.1089/wound.2013.0478. ISSN 2162-1918. PMC 3865615. PMID 24761333.
- International Classification Of Diseases - 9 - CM, (1979). Wonder.cdc.gov. Retrieved on 2014-06-20.
- "Classification of Diseases, Functioning, and Disability". U.S. Centers for Disease Control. Retrieved 29 October 2010.
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