2026 ICD-10-CM Diagnosis Code P52.3Unspecified intraventricular (nontraumatic) hemorrhage of newborn
ICD-10-CM Codes›P00–P96›P50-P61›P52
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 248
- Not Chronic
P52.3 is a billable ICD-10-CM diagnosis code for unspecified intraventricular (nontraumatic) hemorrhage 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hemorrhagic and hematologic disorders of newborn.
For Medicare Advantage risk adjustment, P52.3 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
Code Classification
Medicare Risk Adjustment (HCC)Billing
P52.3 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.
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
- Epilepsy due to perinatal intraventricular hemorrhage
- Intraventricular hemorrhage of prematurity
- Neonatal non-traumatic intraventricular hemorrhage
- Non-traumatic intracerebral ventricular hemorrhage
- Non-traumatic intraventricular hemorrhage of fetus and/or neonate
- Perinatal intraventricular hemorrhage
- Ventricular hemorrhage
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Hemorrhage, hemorrhagic (concealed) R58
newborn (nontraumatic) See Also: Newborn, affected by, hemorrhage; P52.3
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Intraventricular Hemorrhage of Prematurity
bleeding within the cerebral ventricles in a preterm infant.Perinatal Intraventricular Hemorrhage
bleeding within the cerebral ventricles 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
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Convert P52.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P52.3Overview
What is the ICD-10 code for unspecified intraventricular (nontraumatic) hemorrhage of newborn?
The ICD-10-CM code for unspecified intraventricular (nontraumatic) hemorrhage of newborn is P52.3 (sometimes written as P523). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is P52.3 (Intracranial nontraumatic hemorrhage of newborn) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified intraventricular (nontraumatic) hemorrhage of newborn on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does P52.3 group to?
When unspecified intraventricular (nontraumatic) hemorrhage 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 P52.3 a CC or MCC?
CMS lists P52.3 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 P52.3?
Under the General Equivalence Mappings, unspecified intraventricular (nontraumatic) hemorrhage of newborn converts to ICD-9-CM 772.10 (NB intraven hem NOS). The mapping is approximate, so confirm the match fits the documentation.
What HCC is P52.3?
P52.3 (unspecified intraventricular (nontraumatic) hemorrhage 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 P52.3 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, P52.3 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.
