B99 vs P38
B99 (Other and unspecified infectious diseases) compared with P38 (Omphalitis 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. P38 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 | P38Omphalitis 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). | Omphalitis of newborn is a non-billable ICD-10-CM category code (P38). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources