NHSN HAI Reporting
CDC_NHSNfree10 data-quality rules for CDC National Healthcare Safety Network (NHSN) healthcare-associated infection (HAI) reporting (CDA-based) from hospitals. Covers required event/summary elements, HAI event-type and pathogen value sets, NHSN location mapping, denominator (device-/patient-day) plausibility, date logic, and duplicate event suppression. Use it to validate HAI submissions before they reach NHSN (which feed CMS quality programs).
Checks included (10)
Required Event Elements Present
Each HAI event must carry the facility id, patient id, event type, event date, and location.
Patient Identifier Present(patient_id)
Every event must carry a patient identifier for attribution.
Monthly Summary Denominator Present(summary_id)
A monthly summary (denominator) record must exist for each reporting location and period, even when zero events occurred.
Location Maps to an NHSN Location
The reported location must map to a valid CDC NHSN location code so events attribute to the correct unit type.
Pathogen Coded in SNOMED CT
Identified pathogens must be coded against the NHSN organism (SNOMED CT) value set.
Events Do Not Exceed Device Days
The count of device-associated events in a summary period cannot exceed the reported device days.
Event Date Within Reporting Period
Each event date must fall within its summary reporting month/period.
Event Type Is a Valid HAI Type(event_type)
Event type must be an NHSN HAI type (CLABSI, CAUTI, SSI, VAE, LabID, PNEU).
Device Days Are Non-Negative(device_days)
Summary denominator data (device days, patient days) cannot be negative.
No Duplicate HAI Events(event_id)
Each HAI event id must be unique; duplicates inflate infection rates.