Phecode groups relevant ICD-10 and ICD-10-CM codes into clinical meaningful phenotypes thus enable researchers to leverage accumulated ICD-10 and ICD-10-CM data for PheWAS in the EHR.


Wei WQ, Bastarache L, Carroll RJ, Marlo JE, Osterman TJ, Gamazon ER, Cox NJ, Roden DM, Denny JC. Evaluating phecodes, clinical classification software, and ICD-9-CM codes for phenome-wide association studies in the electronic health record. PLoS One. 2017 Jul 7;12(7):e0175508. doi: 10.1371/journal.pone.0175508. eCollection 2017.

Wu P, Gifford A, Meng X, Li X, Campbell H, Varley T, Zhao J, Carroll R, Bastarache L, Denny JC, Theodoratou E, Wei WQ. Developing and Evaluating Mappings of ICD-10 and ICD-10-CM Codes to PheCodes.JMIR Med Inform. 2019 Sep 24. doi: 10.2196/14325. 


Phecode Map 1.2 with ICD-10cm codes or web browsing

Phecode Map 1.2 with ICD-10 codes