K21.9 – ICD-10 Code for GERD (Gastroesophageal Reflux Disease)
ICD-10 Code K21.9 refers to GERD—Gastroesophageal Reflux Disease without esophagitis. This code helps providers bill for patients showing typical reflux symptoms like heartburn or acid regurgitation. Proper documentation is key to accurate claims and timely reimbursement.