K21.9

ICD-10Billable

Gastro-esophageal reflux disease without esophagitis

Official ICD-10-CM descriptor (FY2026)

Gastro-esophageal reflux disease without esophagitis

K21.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Esophageal reflux NOS

Related codes in K21

Where this code sits

Parent code
K21

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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