As of February 2015, corn maltodextrin produced in the United States is likely to contain genetically modified organisms (GMOs). Whether or not corn maltodextrin contains GMOs depends on the ingredients used to produce it.
Corn maltodextrin is made by processing corn with enzymes. As of 2013, the United States Department of Agriculture found that 85 percent of corn planted in the United States is genetically modified to be tolerant to herbicides. Maltodextrin contains GMOs if it is produced using genetically modified corn, or even if there are GMO enzymes used in its production.
As of February 2015, the vast majority of states do not have laws requiring the labeling of genetically modified organisms, so food packaging of United States products does not indicate whether genetically modified corn or enzymes have been used in the production of maltodextrin.