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K21.9

✓ Billable

Gastro-esophageal reflux disease without esophagitis

Diseases of the digestive system (K00-K95)

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Also Known As

Esophageal reflux NOS

❌ Excludes1

inherited from K21

Rules from parent category K21: Gastro-esophageal reflux disease

  • • newborn esophageal reflux (P78.83)

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Code Information

CodeK21.9
BillableYes
ParentK21
CategoryDiseases of the digestive system (K00-K95)
Excludes11 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)