Acute kidney injury comorbidity analysis based on international classification of diseases-10 codes.

"Declarations Ethics approval and consent to participateThe mimic-iv database used in our study was approved by the Massachusetts Institute of Technology (Cambridge, MA) and Beth Israel Deaconess Medical Center (Boston, MA), and informed consent was obtained for the original data collection. The study was designed and implemented in accordance with the relevant guidelines and regulations (Declaration of Helsinki). Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by the National Key R&D Program of China (2019YFB1404801) and the Disciplinary Construction Project of Guangzhou Medical University (02-410-2206181). The funders had no role in the design of the study or collection, analysis, or interpretation of data or in writing the manuscript."