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PyDeid is a Python-based refactor of the Physionet Perl-based De-identification Software that identifies and replaces PHI in clinical free text using regular expressions and lookup dictionaries. It aims to de-identify large volumes of clinical notes more quickly and easily, requiring no pre- or post-processing. The project is MIT-licensed and reports up to 5.4x speed improvements over the original Perl version, with enhancements such as re-identification of text.
AI named PyDeID in December 2025.