ICD-10-CM Diagnosis Code (2025)
Official Description for A09
Infectious gastroenteritis and colitis, unspecified
Coding Notes & Guidelines for A09
Excludes1: Not Coded Here
- colitis NOS (K52.9)
- diarrhea NOS (R19.7)
- enteritis NOS (K52.9)
- gastroenteritis NOS (K52.9)
- noninfective gastroenteritis and colitis, unspecified (K52.9)
Inclusion Terms
- Infectious colitis NOS
- Infectious enteritis NOS
- Infectious gastroenteritis NOS
About ICD-10-CM Code A09 (Infectious gastroenteritis and colitis)
ICD-10-CM code A09 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 A09 became effective on October 1, 2024.
This page provides detailed information about A09 - Infectious gastroenteritis and colitis, unspecified. 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 Infectious gastroenteritis and colitis related to unspecified.