International Classification of Primary Care 2
The International Classification of Primary Care 2 (ICPC2) is a taxonomy of terms and expressions commonly used in general practice or family physicians. Collect the motive for consultation, health problems and issues related with the care process. It was accepted like a standard terminology for the World Health Organization (WHO) mainly as a reason for classification of health encounter, and users may use it as a classification for primary care or general practice. The International Classification of Primary Care 2 (ICPC2) classifies patient data and clinical activity in the domains of general practice/family practice and primary care, taking into account the frequency distribution of problems seen in these domains.
The World Organization of General Practitioners / Family (WONCA) published the first edition in 1987 called International Classification of Primary Care (ICPC-1). In 1993 he published a review that included the translation into several European languages, was the International Classification of Primary Care in the European Community (ICPC-E). In 1998 he published the second original English edition, with the acronym ICPC-2. In 2000 we launched a revised version in electronic format, with the acronym ICPC-2-E. Currently the ICPC-2 is available in 20 languages. Some of these languages includes: Catalan, Chinese, Croatian, Danish, Dutch, English, Finnish, French, German, Greek, Italian, Japanese, Norwegian, Portuguese, Romanian, Russian, Serbian, Slovenian, Spanish and others. (People interested in ICPC-2 translation are asked to contact Marten Kwist, prof. of general practice, Turku University, in charge of translations issues : <firstname.lastname@example.org>) In 1999 he published the Spanish version of the International Classification of Primary Care second edition (ICPC-2), which is also available in electronic format (ICPC-2-E). This new version allows you to sort by "episodes of care" that is a concept larger hospital "episode of illness". The episode of care includes: consultation reason expressed by the patient, the health problems identified by the professional, and interventions or procedures in the care process. Is a reference terminology not only for research but also in the process of informatization of medical records, especially in regard to the classification and coding of information related to primary health care.
Advantages and disadvantages
The ICD-10 (WHO) and ICPC-2 (from WONCA) share the scope with respect to the world reference classification in primary care. The first has the advantage of being the classification required by law in several countries. As drawbacks, ICD10 is extensive, too specific and disease-oriented.
The ICPC-2 is supported by international organizations of general practitioners / family physicians, and is conceived and designed by and for primary health care, is used both for clinical activities, such as teaching and research, with extensive coverage in reasons concerning consultation, without focus only on the disease.
The International Classification of Primary Care, Second Edition, Electronic (ICPC-2-E) is produced by the World Organization of National Colleges, Academies and Academic Associates of General Practitioners/Family Physicians (WONCA) now known as the World Organization of Family Doctors (Wonca). ICPC-2-E is maintained and updated by the International Classification Committee of Wonca (WICC). Update: ICPC-2-E was last updated in 2003. The ICPC-2-E was last updated in the Metathesaurus in 2005. This activity is in charge of the WONCA International Classification Committee (WICC). WICC is a longest serving committee, it is a large group whose mission is to develop and maintain classifications that accommodate the complete domain of family medicine/general practice.
It is based on three-digit alphanumeric code. The first digit is a letter representing an organ or system. The letter defines the chapter, and there are 17 "chapters". The second and third digits are numbers, called "components", which relate with: signs or symptoms; administrative procedures, diagnostic, preventive or therapeutic, results of complementary tests, referrals, monitoring and other reasons for consultation, or diseases and health problems. To assign a "code" you use a biaxial axis (chapters / components) that allows a quick and easy classification. As an aid, and to avoid variability in each code includes: the equivalent in the International Classification of Diseases tenth edition (ICD-10), the terms or synonyms included and excluded, the inclusion criteria, and references to other codes to be considered if not met the inclusion criteria.
The ICPC 2 contains 17 chapters, differentiated by a letter:
- A. General problems and nonspecific
- B. Blood forming organs and the immune system (lymph, spleen and bone marrow)
- D. Digestive
- F. Eye and annexes
- H. Hearing
- K. Circulatory
- L. Locomotor
- N. Nervous system
- P. Psychological problems
- R. Respiratory
- S. Skin and appendages
- T. Endocrine, metabolism and nutrition
- U. Urinary
- W. Family planning, pregnancy, childbirth and puerperium
- X. Female genitalia and breasts
- Y. Male genital system and breast
- Z. Social problems
The CIAP-2, within each chapter, includes three groups of components (complaints, processes of care, and health problems) from three different classifications of WONCA previous:
- Classification of Reasons for Consultation (1981)
- Process International Classification of Primary Care (IC-Process-PC) (1985)
- International Classification of Health Problems in Primary Care (ICHPPC-2-d) (1976, 1983)
The seven components of the CIAP-2 are standardized for all chapters, and are in order:
Reasons for consultation:
- 1. Signs and symptoms (codes from 01 to 29)
Process of care:
- 2. Diagnostic and preventive procedures (30-49)
- 3. Therapeutic procedures (50-59)
- 4. Results of tests (60-61)
- 5. Administrative Procedures (62)
- 6. Referrals, monitoring and other reasons for consultation (63-69)
- 7. Diseases and health problems: (70-99)
- Infectious Diseases
- Congenital anomalies
ICPC2 to ICD10
The "ICPC2-ICD10 Formal Mappings" is a formalization of the existing clinical mappings between the International Classification of Primary Care 2nd edition and the International Classification of Diseases 10th edition. Each code includes the equivalent in the International Classification of Diseases tenth edition (ICD-10) and also in paper version, you could find an index with this mapping that allows you to convert ICPC codes to ICD codes and vice versa.
ICPC2 to SNOMED CT
The Unified Medical Language System (UMLS) metathesaurus mapping use explicit relationships between ICPC-2 PLUS and SNOMED CT terms in the UMLS library to perform the first stage of the mapping. Some iniciatives uses natural language processing techniques and lexical similarities for the second stage of mapping between these terminologies Other possibility is use the cross mapping to ICD10 to SNOMED CT, and then use the mapping between ICD10 and ICPC2
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Submitted by (Carlos Otero)