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 withE86.0 is a valid billable ICD-10 diagnosis code for Dehydration.It is found in the 2025 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered