ICD-10-CM

Since 1979, the US had required ICD-9-CM codes[http://wonder.cdc.gov/wonder/sci_data/codes/icd9/type_txt/icd9cm.asp International Classification Of Diseases - 9 - CM, (1979)] {{Webarchive|url=https://web.archive.org/web/20230909075707/https://wonder.cdc.gov/wonder/sci_data/codes/icd9/type_txt/icd9cm.asp |date=September 9, 2023 }}. Wonder.cdc.gov. Retrieved on 2014-06-20. for Medicare and Medicaid claims, and most of the rest of the medical industry in the US followed suit. On January 1, 1999, the ICD-10 (without clinical extensions) was adopted for reporting mortality, however, ICD-9-CM continued to be used for morbidity.

During that time, the U.S. National Center for Health Statistics (NCHS) received permission from the WHO to create a clinical modification of the ICD-10.

ICD-10-CM adapted ICD-10 in the following ways:{{fact|date=August 2020}}

• Allow the capture of information for ambulatory and managed care encounters
• Expand available injury codes
• Combine codes for diagnosis/symptoms to reduce the number of codes needed to describe a problem fully
• Provide additional sixth and seventh digit classifications
• Add classifications specific to laterality
• Refine classification for increased data granularity

Adoption of ICD-10-CM was slow. On August 21, 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 October 1, 2013. On April 17, 2012, the Department of Health and Human Services (HHS) published a proposed rule that would delay the compliance date for the ICD-10-CM and PCS by 12 months-from October 1, 2013, to October 1, 2014.{{cite web |url=https://www.cdc.gov/nchs/about/otheract/icd9/abticd10.htm |title=Classification of Diseases, Functioning, and Disability |publisher=U.S. Centers for Disease Control |access-date=29 October 2010 }} Congress further delayed the implementation date to October 1, 2015, after it was inserted into the "Doc Fix" Bill without debate over the objections of many.{{fact|date=August 2020}}

On October 1, 2015, ICD-10-CM replaced volumes 1 and 2 of ICD-9-CM, and ICD-10-PCS replaced volume 3.

The ICD-10-CM code set is reviewed every year.{{cite web |title=ICD - ICD-10-CM - International Classification of Diseases,(ICD-10-CM/PCS Transition |url=https://www.cdc.gov/nchs/icd/icd10cm_pcs_faq.htm |website=www.cdc.gov |access-date=January 5, 2023 |language=en-us |date=March 3, 2022 |quote=Like ICD-9-CM codes, ICD-10-CM/PCS codes will be updated every year}} The code set for the 2023 fiscal year applies to patient discharges and encounters between October 1, 2022, and September 30, 2023 (inclusive){{cite journal |last1=Harry |first1=Azia J. |title=ICD-10-CM FY 2023 Diagnosis Code Updates |journal=Journal of AHIMA |date=September 18, 2022 |url=https://journal.ahima.org/page/icd-10-cm-fy-2023-diagnosis-code-updates |access-date=January 5, 2023}}{{Update inline|date=October 2023|?=yes}} – with the exception of four codes that were in effect from April 1, 2022.

• ICD-10 Procedure Coding System, the sister publication for coding procedures
• ICD-11

{{reflist}}

• [https://www.cdc.gov/nchs/icd/icd-10-cm/ ICD-10-CM] (USA – modification) at Centers for Disease Control and Prevention. (CDC)

Category:International Classification of Diseases