[Diarrhea ICD-10](https://mandmclaimscare.com/blog/icd-10-for-diarrhea/ refers to the ICD-10-CM diagnosis code used by healthcare providers and medical billers to document and bill for cases of diarrhea. The most commonly used code is R19.7 – Diarrhea, unspecified, which applies when the underlying cause has not yet been identified. If the diarrhea is linked to a specific condition, such as an infectious disease or inflammatory bowel disorder, a more specific ICD-10 code should be reported instead of R19.7. Accurate ICD-10 coding for diarrhea supports proper clinical documentation, helps ensure correct insurance claim submission, reduces the risk of claim denials, and contributes to appropriate reimbursement.