ICD-10 Code for Influenza
Also indexed as (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus)
The ICD-10-CM code for influenza is J11.1 — Influenza due to unidentified influenza virus with other respiratory manifestations. This is the code the Alphabetic Index gives for influenza with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Billable
Which influenza code should you use?
The Alphabetic Index lists 22 codes under Influenza. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| A | J10 | Influenza due to other identified influenza virus | not billable |
| A/H5N1 | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| avian | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| B | J10 | Influenza due to other identified influenza virus | not billable |
| bird | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| C | J10 | Influenza due to other identified influenza virus | not billable |
| novelH1N1 influenza | J10.1 | Influenza due to other identified influenza virus with other respiratory manifestations | |
| novel influenza A/H1N1 | J10.1 | Influenza due to other identified influenza virus with other respiratory manifestations | |
| of other animal origin, not bird or swine | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| swine | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations |
Influenza with
| digestive manifestations | J11.2 | Influenza due to unidentified influenza virus with gastrointestinal manifestations | |
| encephalopathy | J11.81 | Influenza due to unidentified influenza virus with encephalopathy | |
| enteritis | J11.2 | Influenza due to unidentified influenza virus with gastrointestinal manifestations | |
| gastroenteritis | J11.2 | Influenza due to unidentified influenza virus with gastrointestinal manifestations | |
| gastrointestinal manifestations | J11.2 | Influenza due to unidentified influenza virus with gastrointestinal manifestations | |
| laryngitis | J11.1 | Influenza due to unidentified influenza virus with other respiratory manifestations | |
| myocarditis | J11.82 | Influenza due to unidentified influenza virus with myocarditis | |
| otitis media | J11.83 | Influenza due to unidentified influenza virus with otitis media | |
| pharyngitis | J11.1 | Influenza due to unidentified influenza virus with other respiratory manifestations | |
| pneumonia | J11.00 | Influenza due to unidentified influenza virus with unspecified type of pneumonia | |
| respiratory manifestations NEC | J11.1 | Influenza due to unidentified influenza virus with other respiratory manifestations | |
| specified manifestation NEC | J11.89 | Influenza due to unidentified influenza virus with other manifestations | |
| pneumonia › specified type | J11.08 | Influenza due to unidentified influenza virus with specified pneumonia |
Influenza due to
| avian | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| identified influenza virus NEC | J10.1 | Influenza due to other identified influenza virus with other respiratory manifestations | |
| identified novel influenza A virus | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| identified influenza virus NEC › with › digestive manifestations | J10.2 | Influenza due to other identified influenza virus with gastrointestinal manifestations | |
| identified influenza virus NEC › with › encephalopathy | J10.81 | Influenza due to other identified influenza virus with encephalopathy | |
| identified influenza virus NEC › with › enteritis | J10.2 | Influenza due to other identified influenza virus with gastrointestinal manifestations | |
| identified influenza virus NEC › with › gastroenteritis | J10.2 | Influenza due to other identified influenza virus with gastrointestinal manifestations | |
| identified influenza virus NEC › with › gastrointestinal manifestations | J10.2 | Influenza due to other identified influenza virus with gastrointestinal manifestations | |
| identified influenza virus NEC › with › laryngitis | J10.1 | Influenza due to other identified influenza virus with other respiratory manifestations | |
| identified influenza virus NEC › with › myocarditis | J10.82 | Influenza due to other identified influenza virus with myocarditis | |
| identified influenza virus NEC › with › otitis media | J10.83 | Influenza due to other identified influenza virus with otitis media | |
| identified influenza virus NEC › with › pharyngitis | J10.1 | Influenza due to other identified influenza virus with other respiratory manifestations | |
| identified influenza virus NEC › with › pneumonia | J10.00 | Influenza due to other identified influenza virus with unspecified type of pneumonia | |
| identified influenza virus NEC › with › respiratory manifestations NEC | J10.1 | Influenza due to other identified influenza virus with other respiratory manifestations | |
| identified influenza virus NEC › with › specified manifestation NEC | J10.89 | Influenza due to other identified influenza virus with other manifestations | |
| identified novel influenza A virus › with › digestive manifestations | J09.X3 | Influenza due to identified novel influenza A virus with gastrointestinal manifestations | |
| identified novel influenza A virus › with › encephalopathy | J09.X9 | Influenza due to identified novel influenza A virus with other manifestations | |
| identified novel influenza A virus › with › enteritis | J09.X3 | Influenza due to identified novel influenza A virus with gastrointestinal manifestations | |
| identified novel influenza A virus › with › gastroenteritis | J09.X3 | Influenza due to identified novel influenza A virus with gastrointestinal manifestations | |
| identified novel influenza A virus › with › gastrointestinal manifestations | J09.X3 | Influenza due to identified novel influenza A virus with gastrointestinal manifestations | |
| identified novel influenza A virus › with › laryngitis | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| identified novel influenza A virus › with › myocarditis | J09.X9 | Influenza due to identified novel influenza A virus with other manifestations | |
| identified novel influenza A virus › with › otitis media | J09.X9 | Influenza due to identified novel influenza A virus with other manifestations | |
| identified novel influenza A virus › with › pharyngitis | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| identified novel influenza A virus › with › pneumonia | J09.X1 | Influenza due to identified novel influenza A virus with pneumonia | |
| identified novel influenza A virus › with › respiratory manifestations NEC | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| identified novel influenza A virus › with › specified manifestation NEC | J09.X9 | Influenza due to identified novel influenza A virus with other manifestations | |
| identified novel influenza A virus › with › upper respiratory symptoms | J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestations | |
| identified influenza virus NEC › with › pneumonia › with same identified influenza virus | J10.01 | Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia | |
| identified influenza virus NEC › with › pneumonia › specified type NEC | J10.08 | Influenza due to other identified influenza virus with other specified pneumonia |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources