Regurgitation and rumination of newborn

This code signifies the involuntary return of stomach contents into the esophagus and mouth in a newborn, often without forceful vomiting. It describes the non-bilious, non-forceful spitting up or re-chewing of food by an infant.

Use this code for newborns exhibiting frequent, effortless spitting up or rumination that is not indicative of a more severe gastrointestinal disorder. Documentation should clearly state "regurgitation of newborn" or "rumination of newborn" and rule out other causes like pyloric stenosis or gastroesophageal reflux disease (GERD) requiring a different code.

• Differentiate from R11.10 (Vomiting, unspecified) or R11.11 (Vomiting with nausea) which imply more forceful expulsion or associated symptoms.
• Do not use if the documentation specifies gastroesophageal reflux disease (GERD), which would be coded with K21.0- or K21.9-.
• Ensure the patient's age is consistent with "newborn" (typically up to 28 days of life, though some contexts extend this to 3 months).