J11 vs P23.9
J11 (Influenza due to unidentified influenza virus) compared with P23.9 (Congenital pneumonia, unspecified), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. J11 carries an Excludes2 note covering P23.9: “congenital pneumonia (P23.9)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| J11Influenza due to unidentified influenza virus | P23.9Congenital pneumonia, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | J00-J99 — Diseases of the Respiratory System (J00-J99) | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) |
| Definition | Influenza due to unidentified influenza virus is a non-billable ICD-10-CM category code (J11). | Congenital pneumonia, unspecified is a billable ICD-10-CM diagnosis code (P23.9). |
| Includes | — | infective pneumonia acquired in utero or during birth |
| 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