A09.9 is the ICD-10 code for Gastroenteritis and colitis of unspecified origin. It is a four-character subcategory of A09 (Other gastroenteritis and colitis of infectious and unspecified origin), the most specific level in the WHO edition. It belongs to the block A00–A09 (Intestinal infectious diseases) in Chapter I, Certain infectious and parasitic diseases.
- Code type
- Subcategory (4 characters)
- Chapter
- I · A00–B99
- Classification
- WHO ICD-10, 2019 version
What A09.9 includes
Conditions and terms that are coded here.
- Neonatal diarrhoea NOS
What A09.9 excludes
Conditions that look similar but belong under another code.
- indeterminate colitis K52.3
A09.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
A09.9Gastroenteritt eller kolitt av uspesifisert årsak
DA099Gastroenteritis eller colitis af ikke specificeret årsag
A09.9Sonstige und nicht näher bezeichnete Gastroenteritis und Kolitis nicht näher bezeichneten Ursprungs
A09.9Gastroentérite et colite d’origine non précisée
A09.9gastro-enteritis en colitis van niet-gespecificeerde oorsprong
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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