Influenza due to ident novel influenza A virus w GI manifest

This code signifies an influenza infection caused by a newly identified influenza A virus strain, specifically when the patient presents with symptoms affecting the gastrointestinal system. These manifestations can include nausea, vomiting, diarrhea, or abdominal pain, in addition to typical respiratory flu symptoms.

Apply this code when documentation clearly states a diagnosis of novel influenza A and specifies gastrointestinal involvement. This typically requires laboratory confirmation of the novel influenza A strain. Use when the physician explicitly links the GI symptoms to the influenza infection.

• Ensure documentation specifies "novel influenza A" and not just general influenza.
• Do not use for viral gastroenteritis (intestinal flu) without confirmed novel influenza A, as this is an Excludes1 condition.
• Look for explicit physician documentation linking the gastrointestinal symptoms to the influenza diagnosis.