A04 is the authoritative medical code for Other bacterial intestinal infections. This classification is used in medical billing and clinical recording to specify the clinical criteria for other bacterial intestinal infections (ICD-10-CM A04), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Other bacterial intestinal infections is a non-billable ICD-10-CM category code A04. A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): bacterial foodborne intoxications, NEC A05.-; tuberculous enteritis A18.32.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for A04 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- bacterial foodborne intoxications, NEC A05.-
- tuberculous enteritis A18.32
Frequently Asked Questions (FAQ) & Clinical Guidance
Can A04 be billed directly?
No. A04 (Other bacterial intestinal infections) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with A04?
Per Excludes1 instructions, A04 must not be reported with: bacterial foodborne intoxications, NEC (A05.-); tuberculous enteritis (A18.32).
Codes in This Family (12)
Official ICD-10-CM classifications in the same code family as A04, with their registry titles.
- A04.0 — Enteropathogenic Escherichia coli infection
- A04.1 — Enterotoxigenic Escherichia coli infection
- A04.2 — Enteroinvasive Escherichia coli infection
- A04.3 — Enterohemorrhagic Escherichia coli infection
- A04.4 — Other intestinal Escherichia coli infections
- A04.5 — Campylobacter enteritis
- A04.6 — Enteritis due to Yersinia enterocolitica
- A04.7 — Enterocolitis due to Clostridium difficile
- A04.71 — Enterocolitis due to Clostridium difficile, recurrent
- A04.72 — Enterocolitis due to Clostridium difficile, not specified as recurrent
- A04.8 — Other specified bacterial intestinal infections
- A04.9 — Bacterial intestinal infection, unspecified
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code A05
Other bacterial foodborne intoxications, not elsewhere classified
ICD Code A08
Viral and other specified intestinal infections
ICD Code A09
Infectious gastroenteritis and colitis, unspecified