K21 Gastro-esophageal reflux diseaseNon-billable header with 2 child codes.
K21.0 Gastro-esophageal reflux disease with esophagitisK21.9 Gastro-esophageal reflux disease without esophagitisR63.31 Pediatric feeding disorder, acute ("gastro-esophageal reflux disease (K21.-)")R63.32 Pediatric feeding disorder, chronic ("gastro-esophageal reflux disease (K21.-)")R63.31 Pediatric feeding disorder, acute ("gastro-esophageal reflux disease (K21.-)")R63.32 Pediatric feeding disorder, chronic ("gastro-esophageal reflux disease (K21.-)")K21 Gastro-esophageal reflux disease (this code)K21.0 Gastro-esophageal reflux disease with esophagitisK21.00 Gastro-esophageal reflux disease with esophagitis, without bleedingK21.01 Gastro-esophageal reflux disease with esophagitis, with bleedingK21.9 Gastro-esophageal reflux disease without esophagitis