[[.icd_comorbidity_map
                        Extract vector of codes from an ICD comorbidity
                        map
combine                 combine ICD codes
icd-package             Tools for Working with ICD-9 Codes, and Finding
                        Comorbidities
icd10_chapters          ICD-10 chapters
icd10_sub_chapters      ICD-10 sub-chapters
icd10cm2016             ICD-10-CM
icd9Children            Deprecated: get children of ICD-9 codes
icd9Comorbid            Deprecated: get comorbidities from patient data
icd9ComorbidMatToDf     Deprecated: convert matrix of comorbidities to
                        data frame
icd9Condense            Deprecated: condense list of ICD-9 codes
icd9Count               Deprecated: count number of ICD codes per
                        patient
icd9DecimalToParts      Deprecated: convert between short, decimal
                        ICD-9 codes
icd9DiffComorbid        Deprecated: find difference between comorbidity
                        maps
icd9ExpandRange         Deprecated: expand range of ICD-9 codes
icd9FilterValid         Deprecated: filter valid ICD-9 codes in or out
icd9GetChapters         Deprecated: get chapters for ICD-9 codes
icd9GetMajor            Deprecated: get or identify major part of an
                        ICD-9 code
icd9GetValid            Deprecated: get valid ICD-9 codes
icd9IsBillable          Deprecated: get or test for billable (leaf
                        node) ICD-9 codes
icd9IsN                 Deprecated: is a code a particular ICD-9
                        sub-type?
icd9IsReal              Deprecated: get or identify 'real' defined
                        ICD-9-CM codes.
icd9IsValidMapping      Deprecated: check whether a mapping has only
                        valid ICD-9 codes
icd9LongToWide          Deprecated: convert ICD-9 patient data from
                        long to wide format
icd9Sort                Deprecated: sort ICD-9 codes
icd9Valid               Deprecated: check validity of ICD-9 codes
icd9VanWalraven         Deprecated: calculate Van Walraven score from
                        ICD-9 codes
icd9_chapters           ICD-9 chapters
icd9_is_n               do ICD-9 codes belong to numeric, V or E
                        sub-types?
icd9_map_ahrq           AHRQ comorbidities
icd9_map_elix           Elixhauser comorbidities
icd9_map_quan_deyo      Quan adaptation of Deyo/Charlson comorbidities
icd9_map_quan_elix      Quan adaptation of Elixhauser comorbidities
icd9cm_billable         list of annual versions of billable leaf nodes
                        of ICD-9-CM
icd9cm_hierarchy        Latest ICD-9-CM diagnosis codes, in flat
                        'data.frame' format
icd_charlson            Calculate Charlson Comorbidity Index (Charlson
                        Score)
icd_comorbid_df_to_mat
                        convert comorbidity matrix to data frame
icd_comorbid_mat_to_df
                        convert comorbidity data frame from matrix
icd_count_codes         Count ICD codes or comorbidities for each
                        patient
icd_count_codes_wide    Count ICD codes given in wide format
icd_count_comorbid      Count number of comorbidities per patient
icd_diff_comorbid       show the difference between two comorbidity
                        mappings
icd_filter_poa          Filters data frame based on present-on-arrival
                        flag
icd_filter_valid        Filter ICD-9 codes by validity.
icd_get_defined         Select only defined ICD codes
icd_long_to_wide        Convert ICD data from long to wide format
icd_names_elix          Comorbidity names
icd_poa_choices         Present-on-admission flags
icd_van_walraven        Calculate van Walraven Elixhauser Score
icd_wide_to_long        Convert ICD data from wide to long format
is.icd_short_diag       test ICD-related classes
print.icd_comorbidity_map
                        Print a comorbidity map
subset_icd              extract subset from ICD data
uranium_pathology       United States Transuranium & Uranium Registries
vermont_dx              Hospital discharge data from Vermont
