BreachScout BreachScout Breach Records

Regulator-posted notice

Breach notice filed by Cook County Health & Hospitals System (October 2017)

Organization named: Cook County Health and Hospitals System Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Unauthorized Access/Disclosure

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of Oct. 27, 2017.

Organization as reported
Cook County Health & Hospitals System, IL
Entity type as reported
Healthcare Provider
Category as reported
Unauthorized Access/Disclosure
Location of information as reported
Network Server
Submission date
Oct. 27, 2017
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 14017, row:5156)
Archived copy
Held in the private archive (provenance)

The covered entity (CE), Cook County Health & Hospitals System (CCHHS), reported that its business associate (BA), Experian Health (Experian), discovered an error in the upgrade of two billing platforms which resulted in the delivery of protected health information (PHI) to the wrong recipients. The PHI involved included names, dates of birth, treatment information, and health insurance information. This breach affected 727 individuals. CCHHS notified HHS, affected individuals, the media, and provided substitute notice. To mitigate this issue, Experian reverted back to its older billing platform to rectify this issue.

The source's own words, from the revision above.

Figures, per source

  • 727 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Oct. 27, 2017, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 14017)
  • Approved by a reviewer

Organizations linked by a reviewer

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by Cook County Health & Hospitals System (October 2017). We acknowledge every request within two business days. We reply by email.

The form is being set up. Check back soon.