2026 ICD-10-CM Diagnosis Code P39.8Other specified infections specific to the perinatal period

ICD-10-CM Codes›P00–P96›P35-P39›P39

ICD-10-CM P39.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P39.8 is a billable ICD-10-CM diagnosis code for other specified infections specific to the perinatal period. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Perinatal infections.

Code Identity

ICD-10-CM Code
P39.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified infections specific to the perinatal period
Short Description
Other specified infections specific to the perinatal period
Same as the full description in the CMS dataset.
Parent Code
P39
Other infections specific to the perinatal period

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP35-P39Infections specific to the perinatal period
CategoryP39Other infections specific to the perinatal period
This CodeP39.8Other specified infections specific to the perinatal period

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute infectious tubulointerstitial nephritis
  • Acute necrotizing stomatitis
  • Acute nephritis due to another disorder
  • Acute pyelonephritis
  • Acute tubulointerstitial nephritis
  • Acute tubulointerstitial nephritis associated with systemic infection
  • Acute tubulo-interstitial nephritis due to immunological disorder
  • Cancrum oris
  • Epilepsy due to infectious disease of central nervous system
  • Epilepsy due to neonatal central nervous system infection
  • Infantile streptococcal infection
  • Infection caused by coagulase-negative Staphylococcus
  • Infection causing tracheitis in neonate
  • Necrotizing fasciitis
  • Neonatal coxsackie virus syndrome
  • Neonatal disorder of oral mucosa
  • Neonatal infection caused by Aspergillus
  • Neonatal necrotizing fasciitis
  • Neonatal necrotizing fasciitis caused by Streptococcus
  • Neonatal pseudomonas infection
  • Neonatal sepsis caused by Malassezia
  • Neonatal staphylococcal necrotizing fasciitis
  • Neonatal streptococcal infection
  • Noma neonatorum
  • Perianal streptococcal infection of newborn
  • Perinatal coagulase-negative staphylococcus
  • Perinatal skin and subcutaneous infections of fetus and/or neonate
  • Perinatal staphylococcal infection
  • Pyelonephritis associated with another disorder
  • Sepsis caused by fungus

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Infection, infected, infective(opportunistic)
      • Escherichia (E.) coli NEC
        • congenital
    • Infection, infected, infective(opportunistic)
      • newborn
        • specified type NEC
    • Infection, infected, infective(opportunistic)
      • perinatal period
        • specified type NEC
    • Newborn(infant) (liveborn) (singleton)
      • infection
        • specified NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PNL009
Perinatal infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Acute Pyelonephritis

    sudden onset pyelonephritis.

  • Necrotizing Fasciitis

    infection of the deep skin and subcutaneous tissues and necrosis of the fascia. it is caused by bacteria including group a streptococcus, staphylococcus aureus and clostridium perfringens. it may develop following trauma and invasive procedures.

Patient EducationClinical

Infectious Diseases

Germs, or microbes, are found everywhere - in the air, soil, and water. There are also germs on your skin and in your body. Many of them are harmless, and some can even be helpful. But some of them can make you sick. Infectious diseases are diseases that are caused by germs.

The full article covers:

  • What are infectious diseases?
  • What are the different types of germs that cause infectious diseases?
  • How can you get infectious diseases?
  • What are the symptoms of infectious diseases?
  • What are the treatments for infectious diseases?
  • Can infectious diseases be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert P39.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
771.89 Perinatal infection NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P39.8Overview

Is P39.8 (Other infections specific to the perinatal period) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified infections specific to the perinatal period on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P39.8?

Under the General Equivalence Mappings, other specified infections specific to the perinatal period converts to ICD-9-CM 771.89 (perinatal infection NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.