2026
ICD-10-CM
Diagnosis
Code

K21 Gastro-esophageal reflux disease

  • Non-billable
  • 2016–2026

K21 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Gastro-esophageal reflux disease.

Type 1 excludes

  • Newborn esophageal reflux (P78.83)

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