2026 ICD-10-CM Diagnosis Code P50.4Newborn affected by hemorrhage into maternal circulation

ICD-10-CM Codes›P00–P96›P50-P61›fetal

ICD-10-CM P50.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P50.4 is a billable ICD-10-CM diagnosis code for newborn affected by hemorrhage into maternal circulation. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 791, 793. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hemorrhagic and hematologic disorders of newborn.

Code Identity

ICD-10-CM Code
P50.4
Billable Status
Yes — Valid for Submission
Code Describes
Newborn affected by hemorrhage into maternal circulation
Short Description
Newborn affected by hemorrhage into maternal circulation
Same as the full description in the CMS dataset.
Parent Code
P50
Newborn affected by intrauterine (fetal) blood loss

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP50-P61Hemorrhagic and hematological disorders of newborn
CategoryfetalNewborn affected by intrauterine blood loss (P50)
This CodeP50.4Newborn affected by hemorrhage into maternal circulation

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 PNL011
Hemorrhagic and hematologic disorders of newborn
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 P50.4 to ICD-9-CMHistory

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

ICD-9-CM
772.0 NB fetal blood loss 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 P50.4Overview

What is the ICD-10 code for newborn affected by hemorrhage into maternal circulation?

The ICD-10-CM code for newborn affected by hemorrhage into maternal circulation is P50.4 (sometimes written as P504). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is P50.4 (Newborn affected by intrauterine (fetal) blood loss) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report newborn affected by hemorrhage into maternal circulation on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does P50.4 group to?

When newborn affected by hemorrhage into maternal circulation 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.

What is the ICD-9 equivalent of P50.4?

Under the General Equivalence Mappings, newborn affected by hemorrhage into maternal circulation converts to ICD-9-CM 772.0 (NB fetal blood loss NEC). The mapping is approximate, so confirm the match fits the documentation.