Secondly, AKI staging was only based on creatinine criteria because hourly diuresis was not available in our database. As previously explained, reaching an AKI stage with both criteria could be associated with more severe AKI [14, 27] and it could have been interesting to include this data ...
ICD-10 diagnosis and procedure codes and CPT codes from the index hospitalization and prior 365 days defined chronic comorbidities including hypertension, chronic kidney disease (CKD) (overall and by stage) (Supplemental Table 3), and Deyo-modified Charlson Comorbidity Index (CCI) [30,31] ...