ICD-10 Code: K21 – Gastro-esophageal reflux disease

ICD-10 code K21 corresponds to Gastro-esophageal reflux disease. This code is classified under the chapter K20-K31: Diseases of esophagus, stomach and duodenum, which is part of the K20-K31: Diseases of esophagus, stomach and duodenum category.

The parent chapter is Diseases of the digestive system.