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Tabular List of ICD-10-WHO

Volume 1 of ICD-10-WHO contains the Tabular List, i.e. the four-character comprehensive systematic index (VAS). It is the core of ICD-10-WHO. In addition, it contains some introductory texts, the List of three-character categories ("Dreistellige allgemeine Systematik" DAS), the morphology of neoplasms in ICD-O-2, various special tabulation lists for the tabulation of mortality and morbidity as well as fundamental definitions and nomenclature rules.

Tabular List of inclusions and four-character subcategories (VAS)

The Tabular List of inclusions and four-character subcategories ("Vierstellige ausführliche Systematik" VAS) is the core of ICD-10-WHO. It contains all three- and four-character categories, subclassifications on the formation of five-character categories as well as all definitions, inclusions and exclusions and other notes, etc.

List of three-character categories (DAS)

The List of three-character categories ("Dreistellige allgemeine Systematik" DAS) is an excerpt from the Tabular List of inclusions and four-character subcategories (VAS). Because only the three-character codes are mandatory for reporting on an international level, the DAS of ICD-10-WHO, in addition to chapter and group titles contains all three-character categories only with code and class title, without subcategories or reference notes.

Morphology of neoplasms in ICD-O-2

For the histological classification, the nomenclature of the "Morphology of neoplasms" can be used together with the topographical keys in "Chapter II Neoplasms" of ICD-10-WHO. It corresponds to the ICD-O-2 version published in 1990. Morphology codes start with a capital M, followed by a five-digit number sequence. The first four digits denote the histological type of the neoplasm, the fifth digit is separated by a forward slash and indicates the malignancy grade. The list of keys is prefaced by a brief introduction. The "Morphology of neoplasms" is not identical to the "Systematic index of morphology" in ICD-O-3.

The morphology of neoplasms is part of the online version of ICD-10-WHO (from version 2011, under "Additional information").

Crosswalks and metadata

Two additional machine-readable files are published for the systematic index, namely metadata and crosswalk.

Metadata contain certain additional information on individual codes.

Crosswalk tables match the codes of two successive versions of the classification, in answer to the question: which code of a new version of ICD-10-WHO corresponds to a certain code of a previous version and vice versa?