Chronic Diarrhea ICD-10: Chronic diarrhea is generally coded using R19.7 — Diarrhea, unspecified when the underlying cause has not been established. The term “chronic” describes the duration of symptoms, but it does not automatically create a separate ICD-10-CM code. If a specific underlying condition is diagnosed—such as irritable bowel syndrome, inflammatory bowel disease, infection... https://revantagebilling.com/diarrhea-icd-10-coding-guide-for-providers/