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ICD-10 is the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD), a medical classification list by the World Health Organization (WHO). It codes for diseases, signs and symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or diseases.
The code set allows more than 14,400 different codes and permits the tracking of many new diagnoses. The codes can be expanded to over 16,000 codes by using optional sub-classifications. The detail reported by ICD can be further increased, with a simplified multi-axial approach, by using codes meant to be reported in a separate data field.
The WHO provides detailed information about ICD online, and makes available a set of materials online, such as an ICD-10 online browser, ICD-10 Training, ICD-10 online training, ICD-10 online training support, and study guide materials for download.
The International version of ICD should not be confused with national Clinical Modifications of ICD that frequently include much more detail, and sometimes have separate sections for procedures. The US ICD-10 CM, for instance, has some 68,000 codes. The US also has ICD-10 PCS, a procedure code system not used by other countries that contains 76,000 codes.
Work on ICD-10 began in 1983 and was completed in 1992.
The following is a List of ICD-10 codes.
|I||A00–B99||Certain infectious and parasitic diseases|
|III||D50–D89||Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism|
|IV||E00–E90||Endocrine, nutritional and metabolic diseases|
|V||F00–F99||Mental and behavioural disorders|
|VI||G00–G99||Diseases of the nervous system|
|VII||H00–H59||Diseases of the eye and adnexa|
|VIII||H60–H95||Diseases of the ear and mastoid process|
|IX||I00–I99||Diseases of the circulatory system|
|X||J00–J99||Diseases of the respiratory system|
|XI||K00–K93||Diseases of the digestive system|
|XII||L00–L99||Diseases of the skin and subcutaneous tissue|
|XIII||M00–M99||Diseases of the musculoskeletal system and connective tissue|
|XIV||N00–N99||Diseases of the genitourinary system|
|XV||O00–O99||Pregnancy, childbirth and the puerperium|
|XVI||P00–P96||Certain conditions originating in the perinatal period|
|XVII||Q00–Q99||Congenital malformations, deformations and chromosomal abnormalities|
|XVIII||R00–R99||Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified|
|XIX||S00–T98||Injury, poisoning and certain other consequences of external causes|
|XX||V01–Y98||External causes of morbidity and mortality|
|XXI||Z00–Z99||Factors influencing health status and contact with health services|
|XXII||U00–U99||Codes for special purposes|
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National adoption for clinical use
Some 25 countries use ICD-10 for reimbursement and resource allocation in their health system. A few of them made modifications to ICD to better accommodate this use of ICD-10. The article below makes reference to some of these modifications. The unchanged international version of ICD-10 is used in about 110 countries for cause of death reporting and statistics.
ICD-10-AM (Australian Modification)
1 July 1998 Victoria, New South Wales, Australian Capital Territory and Northern Territory implemented ICD-10-AM.
1 July 1999 Queensland, South Australia, Tasmania and Western Australia implemented ICD-10-AM.
France introduced a clinical addendum to ICD-10 in 2005. See also website of the ATIH.
Germany: ICD-10-GM (German Modification)
A Korean modification has existed since 2008.
1 January 2005 Pretoria, Johannesburg, Cape town
The current Swedish translation of ICD-10 was created in 1997. A clinical modification has added more detail and omits codes of the international version in the context of clinical use of ICD:
The codes F64.1 (Dual-role transvestism), F64.2 (Gender identity disorder of childhood), F65.0 (Fetishism), F65.1 (Fetishistic transvestism), F65.5 (Sadomasochism), F65.6 (Multiple disorders of sexual preference) are not used in Sweden since 1 January 2009 according to a decision by the present Director General of The National Board of Health and Welfare, Sweden. The code O60.0 (Preterm labor without delivery) is not used in Sweden; instead, since 1 January 2009, the Swedish extension codes to O47 (False labor) are recommended for use.
A Thai modification has existed since 2007; the Ministry of Public Health has ICD 10 TM.
The deadline for the United States to begin using Clinical Modification ICD-10-CM for diagnosis coding and Procedure Coding System ICD-10-PCS for inpatient hospital procedure coding is set at October 1, 2015, another year delayed from the previous 2014 deadline The deadline prior was October 1, 2013. All HIPAA "covered entities" must make the change; a pre-requisite to ICD-10 is the adoption of EDI Version 5010 by January 1, 2012. Enforcement of 5010 transition by the Centers for Medicare & Medicaid Services (CMS), however, was postponed by CMS until March 31, 2012, with the federal agency citing numerous factors, including slow software upgrades. The implementation of ICD-10 has been subject to previous delays. In January 2009, the date was pushed back by two years, to October 1, 2013 rather than a prior proposal of October 1, 2011.
Even though the deadline for ICD-10 has been pushed back repeatedly, CMS recommends that medical practices take several years to prepare for implementation of the new code set. The basic structure of the ICD-10 code is the following: Characters 1-3 (the category of disease); 4 (etiology of disease); 5 (body part affected), 6 (severity of illness) and 7 (placeholder for extension of the code to increase specificity) . Not only must new software be installed and tested, but medical practices must provide training for physicians, staff members, and administrators. They will also need to develop new practice policies and guidelines, and update paperwork and forms. For convenience, practices may also create "crosswalks" that will convert their most frequently used ICD-9 codes to the ICD-10 equivalents.  
Dubai Health Authority (DHA) introduced ICD-10 in 2012.
Language versions should not be confused with clinical versions. ICD has been translated into 42 languages.
- Classification of Pharmaco-Therapeutic Referrals
- ICD#ICD-10—provides multiple external links for looking up ICD-10 codes
- International Classification of Diseases for Oncology
- International Classification of Primary Care
- "International Classification of Diseases (ICD)". World Health Organization. Retrieved 23 November 2010.
- ICD-10 online browser[verification needed]
- ICD-10 training tool[verification needed]
- ICD 10 Online Support
- CMS Office of Public Affairs (August 15, 2008). "HHS Proposes Adoption of ICD-10 Code Sets and Updated Electronic Transaction Standards" (Press release). U.S. Department of Health & Human Services. Retrieved 2008-10-22.
- "International Classification of Diseases 10th Revision". World Health Organization. 2010. Retrieved February 26, 2010.
- DRG and ICD information in Queensland[verification needed]
- Deloitte Center for Health Solutions
- WHO - FIC Homepage
- "Senate Approves ICD-10 Delay, 'Doc Fix'".March 31, 2014
- "H.R. 4302 (Protecting Access to Medicare Act of 2014)". U.S. Senate. March 31, 2014, 06:31pm.
- Administrative Simplification: Adoption of a Standard for a Unique Health Plan Identifier; Addition to the National Provider Identifier Requirements; and a Change to the Compliance Date for the International Classification of Diseases, 10th Edition (ICD–10–CM and ICD–10–PCS) Medical Data Code Sets, Centers for Medicare and Medicaid Services. 77 F.R. 54664 of 5 September 2012. 77 F.R. 60629 of 4 October 2012.
- "International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)". National Center for Health Statistics. Centers for Disease Control and Prevention (CDC). December 20, 2010.
- "Overview ICD-10". Centers for Medicare and Medicaid Services.
- Noblis ICD-10 F.A.Q.
- "Physicians Get Grace Period from CMS on HIPAA 5010 Enforcement".Physicians Practice.November 18, 2011
- "Feds Delay ICD-10 for Two Years". The Wall Street Journal. January 15, 2009.
- "CMS.gov/ICD-10/Provider Resources" accessed Aug 1, 2012.
- "AHIMA ICD-10 CM Primer".
- "CMS ICD-10 website".
- "Free ICD10 data".