What is meant by “limited data set” in HIPAA terminology?

The term “limited data set” in HIPAA terminology refers to a specific category of Protected Health Information (PHI) that is allowed for use in research, public health, and health care operations. This data set includes some identifiable information but excludes certain direct identifiers to protect patient privacy. Specifically, a limited data set does not contain information such as names, addresses, and full dates of birth, which could easily lead to patient identification. By allowing the use of a limited data set, HIPAA facilitates the ability of researchers and organizations to use valuable health data for analysis without compromising patient privacy and confidentiality.

In contrast, a full set of patient data without identifiers would not comply with HIPAA's restrictions as it doesn't offer the necessary safeguards for privacy. Data that includes all identifiers would clearly pose a risk to individual privacy and violate HIPAA's provisions. Lastly, a data set limited to only emergency contact information would not meet the criteria of a limited data set, which is broader and focuses more on essential health information while still respecting the need for privacy.