J15 vs P23.9
J15 (Bacterial pneumonia, not elsewhere classified) compared with P23.9 (Congenital pneumonia, unspecified), 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. J15 carries an Excludes1 note covering P23.9: “congenital pneumonia (P23.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Yes, when both are documented. J15 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
| J15Bacterial pneumonia, not elsewhere classified | 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 | Bacterial pneumonia, not elsewhere classified is a non-billable ICD-10-CM category code (J15). | Congenital pneumonia, unspecified is a billable ICD-10-CM diagnosis code (P23.9). |
| Includes | bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae | infective pneumonia acquired in utero or during birth |
| Use additional code | code, if applicable, to identify resistance to antimicrobial drugs (Z16.-) | — |
| Code first | , if applicable, associated influenza (J09.X1, J10.0-, J11.0-) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources