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
World Health Organization (WHO). It
contains codes for diseases, signs and symptoms, abnormal findings,
complaints, social circumstances, and external causes of injury or
diseases. Work on
ICD-10 began in 1983 and was completed in
The code set in the base classification allows for more than 14,400
different codes, and permits the tracking of many new
diagnoses compared to ICD-9). Through the use of optional
sub-classifications the number of codes can be expanded to over
16,000. Some national editions expand the code set
even further; ICD-10-CM, for example, has over 70,000 codes.
The WHO provides detailed information about ICD online, and makes
available a set of materials online, such as an
ICD-10 online training,
training support, and study guide materials for download.
The International version of ICD is the base classification for the
national modifications of ICD. The adapted versions may differ in a
number of ways.
2 National adoptions
2.4 Czech Republic
2.10 South Africa
2.13 United Kingdom
2.14 United States
3 See also
6 External links
The following is a list of
International Statistical Classification of Diseases and Related
Health Problems 10th Revision
Certain infectious and parasitic diseases
Diseases of the blood and blood-forming organs and certain disorders
involving the immune mechanism
Endocrine, nutritional and metabolic diseases
Mental and behavioural disorders
Diseases of the nervous system
Diseases of the eye and adnexa
Diseases of the ear and mastoid process
Diseases of the circulatory system
Diseases of the respiratory system
Diseases of the digestive system
Diseases of the skin and subcutaneous tissue
Diseases of the musculoskeletal system and connective tissue
Diseases of the genitourinary system
Pregnancy, childbirth and the puerperium
Certain conditions originating in the perinatal period
Congenital malformations, deformations and chromosomal abnormalities
Symptoms, signs and abnormal clinical and laboratory findings, not
Injury, poisoning and certain other consequences of external causes
External causes of morbidity and mortality
Factors influencing health status and contact with health services
Codes for special purposes
Some 27 countries use
ICD-10 for reimbursement and resource
allocation in their health system. Some have 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
ICD-10 is used in about 110 countries for performing cause
of death reporting and statistics.
The national versions may differ from the base classification in the
level of detail, incomplete adoption of a category, or the
addition of procedure codes. For example; the
Modification (ICD-10-CM) used in the US has some 93,000 codes,[not
in citation given] compared to the ~16,000 within the international
ICD-10 in 1996.
Canada introduced ICD-10-CA in 2000.
a staggered fashion across nine of the 10 provinces between the years
of 2001 and 2004. As data was returned, comparison was undertaken of
information classified by
ICD-9 and ICD-10, beginning with volumes and
length of stay within major diagnostic groups.
The large scale realignment of individual diagnostic and procedural
codes demanded close analysis of the impacts to existing indicators of
healthcare delivery. Using data reported in 2001 and 2002,the Canadian
Institute for Health Information, an independent organization that
works with the federal government, tabulated the input. Rigorous
statistical analysis was conducted to evaluate the comparability of
ICD-9 codes to
ICD-10 codes as they pertained to the Canadian version
of diagnostic groups, Case Mix Groups (CMGs), which are used in the
patient classification system to group together patients with similar
ICD-10 in 2002.
Czech Republic adopted
ICD-10 in 1994, one year after official
release from WHO. The
Czech Republic uses the international
version without any local modifications. The
Czech Republic adopted
all updates to the international version (namely in
France introduced a clinical addendum to
ICD-10 in 2005.[citation
needed] See also website of the ATIH.
Germany: ICD-10-GM (German Modification)
A Korean modification has existed since 2008.
The Dutch translation of
ICD-10 is ICD10-nl, which was created by the
WHO-FIC Network in 1994. There is an online dictionary.
The ministry of health of Russia ordered in 1997 to transfer all
health organizations to ICD-10.
ICD-10 was implemented in July 2005 under the auspice of the National
ICD-10 Implementation Task Team which is a joint task team between the
National Department of Health and the Council for Medical Schemes.
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.
First published in 1998, the ICD-10-TM (Thai
Modification) is a
Thai language version of ICD-10. Maintenance and
development of ICD-10-TM is the responsibility of the Thai Health
Coding Center (THCC), a department of the Thai
Ministry of Public Health. The current version of
ICD-10-TM is based on the 2016 version of ICD-10. An
unusual feature of the index of ICD-10-TM is that it is bilingual,
containing both Thai and English trails.
Along with Czechoslovakia and Denmark; Thailand was one of the first
ICD-10 for coding purposes.
ICD-10 was first mandated for use in the UK in 1995. In 2010 the
UK Government made a commitment to update the UK version of ICD-10
every three years. On 1 April 2016, following a year's delay,
ICD-10 5th Edition[note 1] replaced the 4th Edition as the mandated
diagnostic classification within the UK.
The US has used ICD-10-CM since October 1, 2015. This national
ICD-10 was provided by the Centers for Medicare and
Medicaid Services (CMS) and the National Center for Health Statistics
(NCHS), and the use of ICD-10-CM codes are now mandated for all
inpatient medical reporting requirements. There are over 70,000
ICD-10-CM codes, which is up from around 14,000 ICD-9-CM codes.
The use of
ICD-10 for coding of death certificates and mortality data
was mandated in the United States beginning in 1999.
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 was set at
October 1, 2015, which is a year later than a previous 2014
deadline. Before that 2014 deadline, the previous deadline has
been a year before that on October 1, 2013. All
entities" must make the change; a pre-requisite to ICD-10-CM 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-CM has been subject to
previous delays. In January 2009, the date was pushed back by two
years, to October 1, 2013, rather than an earlier proposal of October
The most recent pushback of the implementation date has inspired a
mixed reaction from the healthcare community. Even though the
ICD-10 was pushed back repeatedly, CMS recommended that
medical practices take several years to prepare for implementation of
the new code set. The basic structure of the ICD-10-CM 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-CM codes to the ICD-10-CM equivalents.
Two of the most common reasons for pushback are 1) the long list of
potentially relevant codes for a given condition (such as rheumatoid
arthritis) which can be confusing and reduce efficiency and 2) the
seemingly absurd conditions assigned codes (such as W55.22XA: Struck
by cow, initial encounter and V91.07XA: Burn due to water-skis on
fire, initial encounter).
The US also has the
ICD-10 Procedure Coding System (ICD-10-PCS), a
coding system that contains 76,000 procedure codes that is not used by
^ The numbering system of editions only refers to those used in the
UK; not those issued by WHO. For example, whilst the 5th edition is
ICD-10 version:2016, the 4th edition was based on the version
from 2010 (skipping the versions of
ICD-10 from 2014 and 2015).
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^ "H.R. 4302 (Protecting Access to Medicare Act of 2014)". U.S.
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^ "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 inconsistent citations . 77 FR 54664 of 5
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Official website at
World Health Organization
World Health Organization (WHO)
ICD-10 online browser (WHO)
ICD-10 online training direct access (WHO)
ICD-10-CM (USA – modification) at Centers for Disease Control and
SNOMED T axis
MeSH A axis
11 (not yet released; in development)
SNOMED D axis
HCPCS (CPT, Level 2)
9-CM Volume 3
SNOMED P axis
SNOMED C axis