2026 ICD-10-CM Diagnosis Code P52.0Intraventricular (nontraumatic) hemorrhage, grade 1, of newborn

ICD-10-CM Codes›P00–P96›P50-P61›P52

ICD-10-CM P52.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P52.0 is a billable ICD-10-CM diagnosis code for intraventricular (nontraumatic) hemorrhage, grade 1, of newborn. 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 48 closely related codes. Coders also document this condition as early neonatal intracerebral hemorrhage. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hemorrhagic and hematologic disorders of newborn.

For Medicare Advantage risk adjustment, P52.0 maps to CMS-HCC Category 248 (Intracranial Hemorrhage) under the V28 model, adding a risk factor of about 0.239 for a community, non-dual, aged beneficiary in payment year 2026.

Code Identity

ICD-10-CM Code
P52.0
Billable Status
Yes — Valid for Submission
Code Describes
Intraventricular (nontraumatic) hemorrhage, grade 1, of newborn
Short Description
Intraventricular hemorrhage, grade 1, of newborn
Parent Code
P52
Intracranial nontraumatic hemorrhage of newborn

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP50-P61Hemorrhagic and hematological disorders of newborn
CategoryP52Intracranial nontraumatic hemorrhage of newborn
This CodeP52.0Intraventricular (nontraumatic) hemorrhage, grade 1, of newborn

Medicare Risk Adjustment (HCC)Billing

P52.0 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2026.

CMS-HCC V28 Category (Payment Model)
HCC 248— Intracranial Hemorrhage
Payment HCC · PY 2026 one of 53 ICD-10-CM codes in this category
Risk Adjustment Factor (RAF) Weight
+0.239
community, non-dual, aged · ranges 0.081–0.377 across segments
Hierarchy
Supersedes HCC 249
less severe related categories are not paid alongside HCC 248
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Part D (RxHCC)
Not mapped
P52.0 does not risk-adjust in the RxHCC prescription drug model

Source: CMS Payment Year 2026 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Early neonatal intracerebral hemorrhage
  • Early neonatal non-traumatic intracerebral hemorrhage
  • Early neonatal nontraumatic intracranial hemorrhage
  • Early neonatal non-traumatic intraventricular hemorrhage
  • Neonatal non-traumatic intraventricular hemorrhage
  • Non-traumatic intraventricular hemorrhage grade 1 during early neonatal period
  • Non-traumatic intraventricular hemorrhage grade 1 during neonatal period
  • Non-traumatic intraventricular hemorrhage of fetus and/or neonate
  • Perinatal subependymal hemorrhage

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Subependymal hemorrhage (without intraventricular extension)
  • Bleeding into germinal matrix

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

Clinical InformationClinical

  • Perinatal Subependymal Hemorrhage

    bleeding into the thick layer of immature cells under the ependymal lining at the ventrolateral aspect of the lateral cerebral ventricles occurring around the time of birth.

  • Perinatal Subependymal Hemorrhage with Intraventricular and Intracerebral Extension

    a hemorrhage that involves the subependymal region, the lateral cerebral ventricles and the brain tissue occurring around the time of birth.

Patient EducationClinical

Brain Diseases

Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body.

Read the full article at MedlinePlus

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

Convert P52.0 to ICD-9-CMHistory

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

ICD-9-CM
772.11 NB intraven hem,grade i
Exact Match The mapping is direct, with no qualifiers.

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 P52.0Overview

What is the ICD-10 code for intraventricular (nontraumatic) hemorrhage, grade 1, of newborn?

The ICD-10-CM code for intraventricular (nontraumatic) hemorrhage, grade 1, of newborn is P52.0 (sometimes written as P520). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is P52.0 (Intracranial nontraumatic hemorrhage of newborn) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report intraventricular (nontraumatic) hemorrhage, grade 1, of newborn on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does P52.0 group to?

When intraventricular (nontraumatic) hemorrhage, grade 1, of newborn 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 P52.0 a CC or MCC?

CMS lists P52.0 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 48 closely related codes in its exclusion list.

What is the ICD-9 equivalent of P52.0?

Under the General Equivalence Mappings, intraventricular (nontraumatic) hemorrhage, grade 1, of newborn converts to ICD-9-CM 772.11 (NB intraven hem,grade i). The mapping is a direct match.

What HCC is P52.0?

P52.0 (intraventricular (nontraumatic) hemorrhage, grade 1, of newborn) maps to CMS-HCC Category 248 (Intracranial Hemorrhage), commonly written as HCC 248, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2026. It does not map to any RxHCC in the Part D prescription drug model.

Does P52.0 risk-adjust for Medicare Advantage payment?

Yes. When documented and reported on a Medicare Advantage encounter, P52.0 adds a risk adjustment factor of about 0.239 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.081 to 0.377 depending on the payment segment). HCC 248 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 248 category page.