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. 2019 May 6;2019:704–713.

Table 3.

Example of hierarchical ontology for a diagnosis concept in HERON

Representation Type Representation Value
DX_RAW 250.13@Primary
DX_CONEPT 250.13 Diabetes with Ketoacidosis, Type I, Uncontrolled
DX_CLASS_LEV4 250.1 Diabetes with Ketoacidosis
DX_CLASS_LEV3 250 Diabetes Mellitus
DX_CLASS_LEV2 249-259.99 Diseases of Other Endocrine Glands
DX_CLASS_LEV1 240-279.99 Endocrine, Nutritional and Metabolic Diseases, and Immunity Disorders