ICD-10-CM Diagnosis Code (2025)
Official Description for K59.1
Functional diarrhea
Coding Notes & Guidelines for K59.1
Excludes1: Not Coded Here
- diarrhea NOS (R19.7)
- irritable bowel syndrome with diarrhea (K58.0)
Parent Code (Less Specific):
About ICD-10-CM Code K59.1 (Functional diarrhea)
ICD-10-CM code K59.1 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K59.1 became effective on October 1, 2024.
This page provides detailed information about K59.1 - Functional diarrhea. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Functional diarrhea.