This data comprises the original mapping of Elixhauser's ICD-9-CM to 30 comorbidities. According to Sharabiani, this mapping provides the best long-term mortality prediction. The weaknesses of this mapping are that it is based on slightly out-dated ICD-9 codes. I have not yet verified what changes to the ICD-9-CM specification between 1998 and now would impact this mapping.
list of character vectors, each named by co-morbidity
Sharabiani, Mansour T. A., Paul Aylin, and Alex Bottle. "Systematic Review of Comorbidity Indices for Administrative Data." Medical Care December 2012 50, no. 12 (2012): 1109-18. doi:10.1097/MLR.0b013e31825f64d0. http://www.ncbi.nlm.nih.gov/pubmed/22929993
Elixhauser, Anne, Claudia Steiner, D. Robert Harris, and Rosanna M. Coffey. "Comorbidity Measures for Use with Administrative Data." Medical Care January 1998 36, no. 1 (1998): 8-27.
comorbid_elix icd9_comorbid_elix
icd10_comorbid_elix
Other comorbidity maps:
icd10_map_ahrq_pcs,
icd9_map_ahrq,
icd9_map_hcc,
icd9_map_pccc,
icd9_map_quan_deyo,
icd9_map_quan_elix,
icd9_map_single_ccs
Other comorbidities:
comorbid_hcc(),
comorbid(),
icd10_map_ahrq_pcs,
icd9_map_ahrq,
icd9_map_hcc,
icd9_map_pccc,
icd9_map_quan_deyo,
icd9_map_quan_elix,
icd9_map_single_ccs