There are seven comorbidity maps which represent the combinations of ICD-9, ICD-10, diagnosis and procedure codes, and three also with a set of 'fixed' codes. (See reference).
Feudtner C, Feinstein JA, Zhong W, Hall M, Dai D. Pediatric complex chronic conditions classification system version 2: updated for ICD-10 and complex medical technology dependence and transplantation. BMC Pediatr. 2014 Aug8;14:199. doi: 10.1186/1471-2431-14-199. https://www.ncbi.nlm.nih.gov/pubmed/25102958
comorbid_pccc_dx
icd9_comorbid_pccc_dx
icd10_comorbid_pccc_dx
comorbid_pccc_pcs
icd9_comorbid_pccc_pcs
icd10_comorbid_pccc_pcs
https://feudtnerlab.research.chop.edu/ccc_version_2.php
Other comorbidity maps: icd10_map_ahrq_pcs
,
icd9_map_ahrq
, icd9_map_elix
,
icd9_map_hcc
,
icd9_map_quan_deyo
,
icd9_map_quan_elix
,
icd9_map_single_ccs
Other comorbidities: comorbid_hcc
,
comorbid_pccc_dx
, comorbid
,
icd10_map_ahrq_pcs
,
icd9_map_ahrq
, icd9_map_elix
,
icd9_map_hcc
,
icd9_map_quan_deyo
,
icd9_map_quan_elix
,
icd9_map_single_ccs