P36.5 – Sepsis of newborn due to anaerobes
ICD-10-CM 2027 diagnosis code · Infections specific to the perinatal period
ICD-10-CM code
P36.5
- Code
P36.5(claims format:P365)- Description
- Sepsis of newborn due to anaerobes
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 16. Certain conditions originating in the perinatal period (P00-P96)
- Block
- P35-P39 Infections specific to the perinatal period
- Parent codes
- P36
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
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)
Block P35-P39
Applicable to:
- Infections acquired in utero, during birth via the umbilicus, or during the first 28 days after birth
Excludes2 (not included here):
- asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
- congenital gonococcal infection (A54.-)
- congenital pneumonia (P23.-)
- congenital syphilis (A50.-)
- human immunodeficiency virus [HIV] disease (B20)
- infant botulism (A48.51)
- infectious diseases not specific to the perinatal period (A00-B99, J09, J10.-)
- intestinal infectious disease (A00-A09)
- laboratory evidence of human immunodeficiency virus [HIV] (R75)
- tetanus neonatorum (A33)
Index terms for P36.5
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in P36
- P36.0 – Sepsis of newborn due to streptococcus, group BBillable
- P36.1 – Sepsis of newborn due to other and unspecified streptococciHeader
- P36.2 – Sepsis of newborn due to Staphylococcus aureusBillable
- P36.3 – Sepsis of newborn due to other and unspecified staphylococciHeader
- P36.4 – Sepsis of newborn due to Escherichia coliBillable
- P36.8 – Other bacterial sepsis of newbornBillable
- P36.9 – Bacterial sepsis of newborn, unspecifiedBillable
Frequently asked questions
What is ICD-10 code P36.5?
P36.5 is the ICD-10-CM code for sepsis of newborn due to anaerobes, in the block P35-P39 (Infections specific to the perinatal period).
Is P36.5 a billable code?
Yes. P36.5 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does P36.5 belong to?
It belongs to category P36 – Bacterial sepsis of newborn.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.