Infectious gastroenteritis and colitis, unspecified
Billable / specific
A09 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes
- diseases generally recognized as communicable or transmissible
Applicable to
- Infectious colitis NOS
- Infectious enteritis NOS
- Infectious gastroenteritis NOS
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use additional code
Add a code to identify the following, if applicable.
- code to identify resistance to antimicrobial drugs (Z16.-)
Also known as
- Infectious colitis NOS
- Infectious enteritis NOS
- Infectious gastroenteritis NOS
- Arthritis, arthritic, in enteritis, infectious NEC
- Colitis, regional, infectious
- Diarrhea, diarrheal, dysenteric
- Diarrhea, diarrheal, endemic
- Diarrhea, diarrheal, epidemic
- Diarrhea, diarrheal, infectious
- Disease, diseased, diarrheal, infectious NEC
- Dysentery, dysenteric
- Dysentery, dysenteric, arthritis
- Enteritis, epidemic
- Enteritis, infectious NOS
- Enteritis, septic
- Enterocolitis, infectious NEC
- Gastroenteritis, epidemic
- Gastroenteropathy, infectious
Related codes
- A00CholeraHeader
- A01Typhoid and paratyphoid feversHeader
- A02Other salmonella infectionsHeader
- A03ShigellosisHeader
- A04Other bacterial intestinal infectionsHeader
- A05Other bacterial foodborne intoxications, not elsewhere classifiedHeader
- A06AmebiasisHeader
- A07Other protozoal intestinal diseasesHeader
- A08Viral and other specified intestinal infectionsHeader