ICD-10-CM>K00-K95>K20-K31>K21K21Gastro-esophageal reflux diseaseNon-Billable/Non-SpecificType 1 Excludesnewborn esophageal reflux (P78.83)CodesK21.0Gastro-esophageal reflux disease with esophagitisK21.00Gastro-esophageal reflux disease with esophagitis, without bleedingK21.01Gastro-esophageal reflux disease with esophagitis, with bleedingK21.9Gastro-esophageal reflux disease without esophagitis