P36 Bacterial sepsis of newborn
The ICD-10-CM code for Bacterial sepsis of newborn is P36 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- P35-P39: Infections specific to the perinatal period (P35-P39)
- Category P36
- 13 codes (10 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
P36 default congenital; organism add-on rules; severe sepsis codingf. Bacterial Sepsis of Newborn Category P36, Bacterial sepsis of newborn, includes congenital sepsis. If a perinate is documented as having sepsis without documentation of congenital or community acquired, the default is congenital and a code from category P36 should be assigned. If the P36 code includes the causal organism, an additional code from category B95, Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere, or B96, Other bacterial agents as the cause of diseases classified elsewhere, should not be assigned. If the P36 code does not include the causal organism, assign an additional code from category B96. If applicable, use additional codes to identify severe sepsis (R65.2-) and any associated acute organ dysfunction.
Use of Z05 codes (newborn suspected condition ruled out)1) Use of Z05 codes Assign a code from category Z05, Observation and evaluation of newborn for suspected diseases and conditions ruled out, to identify those instances when a healthy newborn is evaluated for a suspected condition/disease that is determined after study not to be present. Do not use a code from category Z05 when the patient is documented to have signs or symptoms of a suspected problem; in such cases code the sign or symptom.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026