DICOM PS3.3 2019b - Information Object Definitions
C.7.6.23.6 Lossy Compression and Palette Color Lookup Tables (Informative)

Image objects containing non-monotonic Palette Color LUTs that are lossy compressed may potentially experience a change in the index values that results in the displayed image having a significantly different appearance than the original image.

DICOM PS3.3 2019b - Information Object Definitions