Repeated regurgitation of food over a period of at least 1 month. Regurgitated food may be re-chewed, re-swallowed, or spit out.

The repeated regurgitation is not attributable to an associated gastrointestinal or other medical condition (e.g., gastroesophageal reflux, pyloric stenosis).

The eating disturbance does not occur exclusively during the course of anorexia nervosa, bulimia nervosa, binge-eating disorder, or avoidant/restrictive food intake disorder.

If the symptoms occur in the context of another mental disorder (e.g., intellectual developmental disorder or another neurodevelopmental disorder), they are sufficiently severe to warrant additional clinical attention.

In remission: After full criteria for rumination disorder were previously met, the criteria have not been met for a sustained period of time.