HHS OCR guidance on de-identification (2012): several releases and combination risk (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 2.5)
Releases cut differently for different recipients must not combine to identify anyone, which matters when the same records reach more than one buyer.
Dated 17 Oct 2026Source checked 17 Oct 2026Basis: primary text
In the source's own words
“In such cases, the expert must take care to ensure that the data sets cannot be combined to compromise the protections set in place through the mitigation strategy.”
Where it was read
Also read from the same source
- HHS OCR guidance on de-identification (2012): who is an expert (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 2.2)
- HHS OCR guidance on de-identification (2012): how an expert works (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 2.6)
- HHS OCR guidance on de-identification (2012): no fixed numerical risk level (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 2.3)
- HHS OCR guidance on de-identification (2012): methods and results documented (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 2.6)
- HHS OCR guidance on de-identification (2012): time-limited determinations (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 2.4)
- HHS OCR guidance on de-identification (2012): what actual knowledge means (HHS OCR, Guidance Regarding Methods for De-identification of PHI, 26 November 2012, section 3.6)
Figures it counts in
It is shown on its own, not counted into a figure.
Cited in this guide