ICD-10-CM Alphabetic Index · FY 2026 58 Entries
Influenza (respiratory) in the ICD-10-CM Index ICD-10-CM
The main term Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus) carries 58 index entries pointing to 22 ICD-10-CM codes. The default entry is J11.1, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
58
Index Entries
22
Codes Referenced
J11.1
Default Code
I
Letter
58 of 58 shown
ICD-10-CM
Index Entries Under Influenza (respiratory) 58 entries · 22 codes
Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus) J11.1
with
digestive manifestations J11.2
encephalopathy J11.81
enteritis J11.2
gastroenteritis J11.2
gastrointestinal manifestations J11.2
laryngitis J11.1
myocarditis J11.82
otitis media J11.83
pharyngitis J11.1
pneumonia J11.00
specified type J11.08
respiratory manifestations NEC J11.1
specified manifestation NEC J11.89
A (non-novel) J10- Non-billable
A/H5N1 J09.X2 see also Influenza, due to, identified novel influenza A virus
avian J09.X2 see also Influenza, due to, identified novel influenza A virus
B J10- Non-billable
bird J09.X2 see also Influenza, due to, identified novel influenza A virus
C J10- Non-billable
due to
avian J09.X2 see also Influenza, due to, identified novel influenza A virus
identified influenza virus NEC J10.1
with
digestive manifestations J10.2
encephalopathy J10.81
enteritis J10.2
gastroenteritis J10.2
gastrointestinal manifestations J10.2
laryngitis J10.1
myocarditis J10.82
otitis media J10.83
pharyngitis J10.1
pneumonia (unspecified type) J10.00
with same identified influenza virus J10.01
specified type NEC J10.08
respiratory manifestations NEC J10.1
specified manifestation NEC J10.89
identified novel influenza A virus J09.X2
with
digestive manifestations J09.X3
encephalopathy J09.X9
enteritis J09.X3
gastroenteritis J09.X3
gastrointestinal manifestations J09.X3
laryngitis J09.X2
myocarditis J09.X9
otitis media J09.X9
pharyngitis J09.X2
pneumonia J09.X1
respiratory manifestations NEC J09.X2
specified manifestation NEC J09.X9
upper respiratory symptoms J09.X2
novel (2009) H1N1 influenza J10.1 see also Influenza, due to, identified influenza virus NEC
novel influenza A/H1N1 J10.1 see also Influenza, due to, identified influenza virus NEC
of other animal origin, not bird or swine J09.X2 see also Influenza, due to, identified novel influenza A virus
swine (viruses that normally cause infections in pigs) J09.X2 see also Influenza, due to, identified novel influenza A virus
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
