Current
A09 — Infectious gastroenteritis and colitis, unspecified
Part of Chapter 1: Certain infectious and parasitic diseases , block Intestinal infectious diseases (A00-A09) .
Official Notes
Inclusion Terms
Infectious colitis NOS
Inclusion Terms
Infectious enteritis NOS
Inclusion Terms
Infectious gastroenteritis NOS
Excludes1
colitis NOS ( K52.9 )
Excludes1
diarrhea NOS ( R19.7 )
Excludes1
enteritis NOS ( K52.9 )
Excludes1
gastroenteritis NOS ( K52.9 )
Excludes1
noninfective gastroenteritis and colitis, unspecified ( K52.9 )
Child Codes
A09 has no child codes in the FY 2027 release -- it is used on its own.
Referenced By
Official notes on these codes cite A09.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS