.. docs/source/tasks/elixhauserci.rst .. Copyright (C) 2012, University of Cambridge, Department of Psychiatry. Created by Rudolf Cardinal (rnc1001@cam.ac.uk). . This file is part of CamCOPS. . CamCOPS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. . CamCOPS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. . You should have received a copy of the GNU General Public License along with CamCOPS. If not, see . .. _elixhauserci: Elixhauser Comorbidity Index (ElixhauserCI) ------------------------------------------- A count (0-31) of the number of categories of comorbidity that someone has, based on the :ref:`International Classification of Diseases `. Intellectual property rights ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The paper Quan et al. (2005), which develops the mapping from ICD-10 codes to disease categories, is copyright © 2005 Lippincott Williams & Wilkins. The comorbidity terms (e.g. "congestive heart failure") are themselves believed to be in the public domain. The ICD-10 codes (which are owned by the WHO; see :ref:`ICD-10 diagnostic coding `) are not used in the CamCOPS version of the task, which justs asks clinicians to score presence/absence. History ~~~~~~~ - Elixhauser A, Steiner C, Harris DR, Coffey RM (1998). Comorbidity measures for use with administrative data. *Med Care.* 36: 8-27. https://www.ncbi.nlm.nih.gov/pubmed/9431328 [Original 30-item version using ICD-9-CM codes.] - Subsequent updates as per http://mchp-appserv.cpe.umanitoba.ca/viewConcept.php?printer=Y&conceptID=1436, including: - Quan H, Sundararajan V, Halfon P, Fong A, Burnand B, Luthi JC, Saunders LD, Beck CA, Feasby TE, Ghali WA (2005). Coding algorithms for defining comorbidities in ICD-9-CM and ICD-10 administrative data. *Med Care.* 43: 1130-9. https://www.ncbi.nlm.nih.gov/pubmed/16224307 [This paper extends Elixhauser et al. (1998) to ICD-10 codes, developing an ICD-10 coding algorithm.] Source ~~~~~~ - http://mchp-appserv.cpe.umanitoba.ca/viewConcept.php?printer=Y&conceptID=1436