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jackwasey / icd

Fast ICD-10 and ICD-9 comorbidities, decoding and validation in R. NB use main instead of master for default branch.
https://jackwasey.github.io/icd/
GNU General Public License v3.0
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Include MS-DRG so morbidities can be distinguished from co-morbidities #21

Closed jackwasey closed 9 years ago

jackwasey commented 10 years ago

This data is publicly available, and compact. Main use would be to allow correct application of co-morbidity mappings, since e.g. Elixhauser specifies specific DRG exclusions, otherwise the patient has a morbidity, not a co-morbidity.

Multiple versions, now migrating to ICD-10-CM: http://www.cms.hhs.gov/AcuteInpatientPPS/downloads/FY_2010_FR_Table_5.zip

jackwasey commented 9 years ago

the common "present-on-arrival" flag does most of the work in distinguishing new morbidity from pre-existing, comorbidity. It seems likely that the primary diagnosis which forms the basis of the DRG, will be relevant to outcomes researchers because it is by definition pre-existing if it is the cause of admission. We don't care if it is the primary diagnosis or not in general, and we can usually determine the primary diagnosis, if needed, without going through a complicated DRG interpretation.