HOME

TheInfoList



OR:

The International Classification of Health Interventions (ICHI) is a system of classifying
procedure code Procedure codes are a sub-type of medical classification used to identify specific surgical, medical, or diagnostic interventions. The structure of the codes will depend on the classification; for example some use a numerical system, others alph ...
s being developed by the
World Health Organization The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. The WHO Constitution states its main objective as "the attainment by all peoples of the highest possible level o ...
(WHO). It is currently available as a beta 3 release. The components for clinical documentation are stable. The component on public health interventions is in the process of being finalized. Updates on development and status of the classification are listed on WHO home page.


History

The WHO began development of ICHI in 2012 as a replacement for ''International Classification of Procedures in Medicine'' (ICPM), which was a system of classifying
procedure code Procedure codes are a sub-type of medical classification used to identify specific surgical, medical, or diagnostic interventions. The structure of the codes will depend on the classification; for example some use a numerical system, others alph ...
s published from 1978. ICPM, however, never received the same international acceptance as
ICD-9 The International Classification of Diseases (ICD) is a globally used diagnostic tool for epidemiology, health management and clinical purposes. The ICD is maintained by the World Health Organization (WHO), which is the directing and coordinati ...
. Due to difficulties in the consultation processes, development of the ICPM effectively stopped in 1989. As a result, nations would go on to develop their own individual classifications for procedures and interventions incompatible with the ICPM approach. Germany's OPS-301 is based on the Dutch extension of ICPM; the ICPM-DE. The ICHI's framework is designed to allow international comparison of data from the known national interventions classifications, and as a system for clinical documentation of individual interventions.


Identifiers

ICHI is using letters to identify a procedure. For example, code EAA.AD.AA is for Biopsy of Pituitary gland. A decimal number following a 3rd decimal point will serve to identify indivual interventions and methods within one category.


Relationship to SNOMED CT (procedures hierarchy)

ICHI is not linked to SNOMED. In contrast to SNOMED, ICHI covers interventions of all domains in health at the individual and population level. Some procedural concepts that are present in
SNOMED CT SNOMED CT or SNOMED Clinical Terms is a systematically organized computer-processable collection of medical terms providing codes, terms, synonyms and definitions used in clinical documentation and reporting. SNOMED CT is considered to be the mo ...
do not have a corresponding concept in ICHI (e.g., endoscopy). SNOMED CT is using attributes that may link procedures to other related concepts. For example, SNOMED CT concept model for procedure allows linking substances to procedures using 'Direct Substance' attribute. Similarly, the ICHI allows postcoordination with devices or substances. As a result, the scope for the set of relationships in ICHI is broader than in SNOMED CT, due to the common foundation with
ICD-11 The ICD-11 is the eleventh revision of the International Classification of Diseases (ICD). It replaces the ICD-10 as the global standard for recording health information and causes of death. The ICD is developed and annually updated by the World H ...
.


Development

The first test approach to ICHI was largely derived from the ''Australian Classification of Health Interventions'' (ACHI), a portion of the Australian standard
ICD-10-AM 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 contains codes for diseases, signs and symptom ...
, which in turn was largely derived from
ICD-10 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 contains codes for diseases, signs and symptoms ...
and the United States extension
ICD-9-CM The International Classification of Diseases (ICD) is a globally used diagnostic tool for epidemiology, health management and clinical purposes. The ICD is maintained by the World Health Organization (WHO), which is the directing and coordinating ...
. However, that approach was later dropped. For accounting, the Australian health administration generated a code of
Diagnosis-related group Diagnosis-related group (DRG) is a system to classify hospital cases into one of originally 467 groups, with the last group (coded as 470 through v24, 999 thereafter) being "Ungroupable". This system of classification was developed as a collabora ...
s which in effect again deviates from the WHO basis. The same phenomenon applies to DRG codes in Germany and other countries. Other codes generated by the UN accredited International Standards Organisation ISO defined a deviating scope.ISO 9999:2011. Assistive products for persons with disability -- Classification and terminology
/ref> Cooperation of ISO and WHO is not detected.


See also

*
ICD-10-PCS The ICD-10 Procedure Coding System (ICD-10-PCS) is an international system of medical classification used for procedural coding. The Centers for Medicare and Medicaid Services, the agency responsible for maintaining the inpatient procedure code s ...
(US-American version for coding) *
Clinical coding A clinical coder—also known as clinical coding officer, diagnostic coder, medical coder, or nosologist—is a health information professional whose main duties are to analyse clinical statements and assign standard codes using a classification ...
*
Diagnosis code In health care, diagnosis codes are used as a tool to group and identify diseases, disorders, symptoms, poisonings, adverse effects of drugs and chemicals, injuries and other reasons for patient encounters. Diagnostic coding is the translation of w ...
s *
Medical classification A medical classification is used to transform descriptions of medical diagnoses or procedures into standardized statistical code in a process known as clinical coding. Diagnosis classifications list diagnosis codes, which are used to track diseas ...


References


External links


WHO site
*
WHO ICHI Browser
*
WHO DRAFT ICHI coding tool

Australian site
(Australian version for coding) {{Medical classification Clinical procedure classification