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
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(),
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