ICD-10-CM K21: Gastro-esophageal reflux disease

ICD-10-CM Diagnosis Code (2025)

Official Description for K21

Gastro-esophageal reflux disease

Coding Notes & Guidelines for K21

Excludes1: Not Coded Here

newborn esophageal reflux (P78.83)

Inclusion Terms

Reflux esophagitis

Inclusion Terms

Esophageal reflux NOS

Child Codes (More Specific Codes for K21):

K21.0 - Gastro-esophageal reflux disease with esophagitis K21.00 - Gastro-esophageal reflux disease with esophagitis, without bleeding K21.01 - Gastro-esophageal reflux disease with esophagitis, with bleeding K21.9 - Gastro-esophageal reflux disease without esophagitis

About ICD-10-CM Code K21 (Gastro-esophageal reflux disease)

ICD-10-CM code K21 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K21 became effective on October 1, 2024.

This page provides detailed information about K21 - Gastro-esophageal reflux disease. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Gastro-esophageal reflux disease.