A04 — Other bacterial intestinal infections

Not billable

Is A04 billable?

No — A04 is a non-billable header code. A04 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 11 billable codes beneath A04.

Billable codes under this header

A04 at a glance

Code	A04
Description	Other bacterial intestinal infections
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with A04 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

bacterial foodborne intoxications, NEC (A05.-)
tuberculous enteritis (A18.32)

Use additional code — inherited from Chapter 1

Report an additional code alongside A04 to fully describe the condition. A04 is sequenced first.

code to identify resistance to antimicrobial drugs (Z16.-)

Excludes2 — not included here — inherited from Chapter 1

The conditions below are not part of A04, but a patient may have both at the same time. When documentation supports it, A04 and the excluded code may both be reported.

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)

What codes fall under A04? (10)

How long has A04 existed?

A04 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.