P36.5 Sepsis of newborn due to anaerobes

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from P36 Bacterial sepsis of newborn

Includes

• congenital sepsis

Use additional code

• code(s), if applicable, to identify severe sepsis (R65.2-) and associated acute organ dysfunction(s)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 2 — Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock
• CMS-HCC V22: HCC 2 — Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock
• ESRD V24: HCC 2

MS-DRG index

Defines the logic of DRG(s) 791 in MDC 15.

Approximate ICD-9-CM (GEMs)

• 771.81 Septicemia [sepsis] of newborn (approximate)

Code annotations containing back-references to P36.5

Back-references to P36

• Type 1 Excludes: A41 Other sepsis ("neonatal (P36.-)")
• Type 2 Excludes: P00.2 Newborn affected by maternal infectious and parasitic diseases ("infections specific to the perinatal period (P35-P39)")

Diagnosis Index entries for P36.5

• Newborn (infant) (liveborn) (singleton) › sepsis (congenital) › due to › anaerobes NEC
• Sepsis (generalized) (unspecified organism) › newborn › due to › anaerobes NEC

Nearby codes

• P36.2 Sepsis of newborn due to Staphylococcus aureus
• P36.3 Sepsis of newborn due to other and unspecified staphylococci
• P36.30 Sepsis of newborn due to unspecified staphylococci
• P36.39 Sepsis of newborn due to other staphylococci
• P36.4 Sepsis of newborn due to Escherichia coli
• P36.5 Sepsis of newborn due to anaerobes (this code)
• P36.8 Other bacterial sepsis of newborn
• P36.9 Bacterial sepsis of newborn, unspecified