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Table 1 Types of PHI and their risk to patient confidentiality

From: Improved de-identification of physician notes through integrative modeling of both public and private medical text

PHI type

Minimum disclosure

Risk

Hospital

LDS

Minimal

Age

LDS

Minimal

Date

LDS

Minimal

Doctor

LDS

Minimal

Location

Identified

High

Patient

Identified

High

ID

Identified

High

Phone

Identified

High

  1. Minimum Disclosure refers to the level of permission typically required by an IRB. Limited Data Sets (LDS) contain features about a patient that refer to more than one patient. Identified level access almost always refers to a single patient, such as a patient name, medical record number, or phone number.