A08 vs J09.X3
A08 (Viral and other specified intestinal infections) compared with J09.X3 (Influenza due to identified novel influenza A virus with gastrointestinal manifestations), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. A08 carries an Excludes1 note covering J09.X3: “influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. J09.X3 carries an Excludes1 note covering A08: “'intestinal flu' [viral gastroenteritis] (A08.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| A08Viral and other specified intestinal infections | J09.X3Influenza due to identified novel influenza A virus with gastrointestinal manifestations | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | J00-J99 — Diseases of the Respiratory System (J00-J99) |
| Definition | Viral and other specified intestinal infections is a non-billable ICD-10-CM category code (A08). | Influenza due to identified novel influenza A virus with gastrointestinal manifestations is a billable ICD-10-CM diagnosis code (J09.X3). |
| Includes | — | Influenza due to identified novel influenza A virus gastroenteritis |
| Use additional code | — | code, if applicable, to identify resistance to antimicrobial drugs (Z16.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources