K21Non-billable (header)
Gastro-esophageal reflux disease
✗ Excludes 1(Not coded here)
- •newborn esophageal reflux (P78.83)
Code Hierarchy
┌11Diseases of the digestive system (K00-K95)├K20-K31Diseases of esophagus, stomach and duodenum (K20-K31)├K21Gastro-esophageal reflux disease
└K21Gastro-esophageal reflux disease
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