Medical Risk and Comorbidity Tools for ICD-9-CM Data
Calculate the Charlson Comorbidity Index
Generate a comorbidity dataframe
Create Deyo map of ICD-9-CM to Charlson comorbidities
Create Quan map of ICD-9-CM to Charlson comorbidities
Create Romano map of ICD-9-CM to Charlson comorbidities
Create AHRQ v3.7 map of ICD-9-CM to Elixhauser comorbidities
Create Quan map of ICD-9-CM to Elixhauser comorbidities
Create Map of ICD-9-CM to Revised Cardiac Risk Index classes
Returns composite Sessler risk stratification index, given a list of I...
Convert ICD-9-CM code list to dataframe
Merge ICD-9-CM diagnostic and procedure codes
Returns the covariate coefficient for a particular diagnosis or proced...
Validates this Sessler RSI implementation against reference data
Generates risk estimates and comorbidity flags from ICD-9-CM codes available in administrative medical datasets. The package supports the Charlson Comorbidity Index, the Elixhauser Comorbidity classification, the Revised Cardiac Risk Index, and the Risk Stratification Index. Methods are table-based, fast, and use the 'plyr' package, so parallelization is possible for large jobs. Also includes a sample of real ICD-9 data for 100 patients from a publicly available dataset.
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