CDC expects that the facility has done adequate data validation to ensure data being reported are complete and correct by comparing dialysis event data collected manually to the dialysis event data that has been reported to NHSN. This should be done in order to ensure that the minimum monthly Dialysis reporting requirements are met, as failure to meet requirements can negatively impact facility NHSN QIP Performance measure and subsequently the performance score.
https://www.cdc.gov/nhsn/pdfs/dialysis/3-steps-to-review-de-data-2014.pdf