ICD-10 Code A09 – Infectious gastroenteritis and colitis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
The ICD-10 code for Infectious gastroenteritis and colitis, unspecified is A09.2026 ICD-10-CM Diagnosis Code A09 – Infectious gastroenteritis and colitis, unspecified What it is A09 is used for infectious inflammation of the stomach and intestines when the specific organism is not identified. It covers acute diarrhea or colitis attributed to infection, but the cause remains…