kode icd 10 geaK21.00 is a billablespecific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.; Short description: Gastro-esophageal reflux dis withK46.9 is a billablespecific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.; The 2025 edition of ICD-10-CM K46.9 became effective on October