
ICD-10 Code for GERD Without Esophagitis (K21.9): 2026 Coding and Billing Guide
GERD without esophagitis maps to ICD-10 code K21.9. Learn correct documentation, CPT pairings, sequencing rules, and denial fixes.
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GERD without esophagitis maps to ICD-10 code K21.9. Learn correct documentation, CPT pairings, sequencing rules, and denial fixes.

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Gastroenterology practices lose thousands of dollars every year, not because they provide poor care, but because the billing side of the house does not catch