2026 ICD-10-CM Diagnosis Code P39.2Intra-amniotic infection affecting newborn, not elsewhere classified

ICD-10-CM Codes›P00–P96›P35-P39›P39

ICD-10-CM P39.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P39.2 is a billable ICD-10-CM diagnosis code for intra-amniotic infection affecting newborn, not elsewhere classified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 46 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Perinatal infections.

Code Identity

ICD-10-CM Code
P39.2
Billable Status
Yes — Valid for Submission
Code Describes
Intra-amniotic infection affecting newborn, not elsewhere classified
Short Description
Intra-amniotic infection affecting newborn, NEC
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 CodeP39.2Intra-amniotic infection affecting newborn, not elsewhere classified

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

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

Patient EducationClinical

Uncommon Infant and Newborn Problems

It can be scary when your baby is sick, especially when it is not an everyday problem like a cold or a fever. You may not know whether the problem is serious or how to treat it. If you have concerns about your baby's health, call your health care provider right away.

Read the full article at MedlinePlus

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

Convert P39.2 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 P39.2Overview

What is the ICD-10 code for intra-amniotic infection affecting newborn, not elsewhere classified?

The ICD-10-CM code for intra-amniotic infection affecting newborn, not elsewhere classified is P39.2 (sometimes written as P392). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is P39.2 (Other infections specific to the perinatal period) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report intra-amniotic infection affecting newborn, not elsewhere classified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does P39.2 group to?

When intra-amniotic infection affecting newborn, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 791, 793, with relative weights from 4.0590 to 4.1696 depending on complications. Higher weights mean higher Medicare reimbursement.

Is P39.2 a CC or MCC?

CMS lists P39.2 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 46 closely related codes in its exclusion list.

What is the ICD-9 equivalent of P39.2?

Under the General Equivalence Mappings, intra-amniotic infection affecting newborn, not elsewhere classified converts to ICD-9-CM 771.89 (perinatal infection NEC). The mapping is approximate, so confirm the match fits the documentation.