B99 vs P36
B99 (Other and unspecified infectious diseases) compared with P36 (Bacterial sepsis of newborn), 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. P36 carries an Excludes2 note covering B99: “infectious diseases not specific to the perinatal period (A00-B99, J09, J10.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| B99Other and unspecified infectious diseases | P36Bacterial sepsis of newborn | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) |
| Definition | Other and unspecified infectious diseases is a non-billable ICD-10-CM category code (B99). | Bacterial sepsis of newborn is a non-billable ICD-10-CM category code (P36). |
| Includes | — | congenital sepsis |
| Use additional code | — | code(s), if applicable, to identify severe sepsis (R65.2-) and associated acute organ dysfunction(s) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources