2026 ICD-10-CM Diagnosis Code P52.5Subarachnoid (nontraumatic) hemorrhage of newborn

ICD-10-CM Codes›P00–P96›P50-P61›P52

ICD-10-CM P52.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P52.5 is a billable ICD-10-CM diagnosis code for subarachnoid (nontraumatic) hemorrhage of newborn. 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 Hemorrhagic and hematologic disorders of newborn.

Code Identity

ICD-10-CM Code
P52.5
Billable Status
Yes — Valid for Submission
Code Describes
Subarachnoid (nontraumatic) hemorrhage of newborn
Short Description
Subarachnoid (nontraumatic) hemorrhage of newborn
Same as the full description in the CMS dataset.
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 CodeP52.5Subarachnoid (nontraumatic) hemorrhage of newborn

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Convexal subarachnoid hemorrhage
  • Cryptogenic non-traumatic subarachnoid hemorrhage of brain
  • Decreased flexion
  • Early neonatal intracerebral hemorrhage
  • Early neonatal non-traumatic hemorrhage of subarachnoid space of brain
  • Early neonatal non-traumatic intracerebral hemorrhage
  • Early neonatal nontraumatic intracranial hemorrhage
  • Headache due to spontaneous subarachnoid hemorrhage
  • Hemorrhage into subarachnoid space of neuraxis
  • Hemorrhage into subarachnoid space of spine
  • Hemorrhage into subpial space of neuraxis
  • Neonatal nontraumatic subarachnoid hemorrhage
  • Non-traumatic hemorrhage of subarachnoid space from vertebral artery
  • Nontraumatic subarachnoid hemorrhage with brain compression
  • Nuchal rigidity
  • Nuchal rigidity due to subarachnoid hemorrhage
  • Perinatal subarachnoid hemorrhage
  • Spontaneous hemorrhage of subarachnoid space from basilar artery
  • Spontaneous hemorrhage of subarachnoid space from intracranial artery
  • Spontaneous hemorrhage of subarachnoid space from left middle cerebral artery
  • Spontaneous hemorrhage of subarachnoid space from left posterior communicating artery
  • Spontaneous hemorrhage of subarachnoid space from right middle cerebral artery
  • Spontaneous hemorrhage of subarachnoid space from right posterior communicating artery
  • Spontaneous rupture of left posterior communicating artery
  • Spontaneous rupture of right posterior communicating artery
  • Spontaneous subarachnoid hemorrhage
  • Subarachnoid hemorrhage
  • Subarachnoid hemorrhage from vertebral artery
  • Subpial intracranial hemorrhage
  • Transient ischemic attack co-occurrent with subarachnoid hemorrhage
  • Vertebral artery rupture

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.

    • Hematoma(traumatic) (skin surface intact)
      • subarachnoid (traumatic)
        • newborn (nontraumatic)
    • Hemorrhage, hemorrhagic(concealed)
      • intracranial (nontraumatic)
        • subarachnoid (nontraumatic) (from)
          • newborn
    • Newborn(infant) (liveborn) (singleton)
      • affected by
        • hemorrhage (antepartum)
          • subarachnoid (nontraumatic)

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

  • Subarachnoid Hemorrhage

    bleeding into the intracranial or spinal subarachnoid space, most resulting from intracranial aneurysm rupture. it can occur after traumatic injuries (subarachnoid hemorrhage, traumatic). clinical features include headache; nausea; vomiting, nuchal rigidity, variable neurological deficits and reduced mental status.

  • Subarachnoid Hemorrhage, Traumatic

    bleeding into the subarachnoid space due to craniocerebral trauma. minor hemorrhages may be asymptomatic; moderate to severe hemorrhages may be associated with intracranial hypertension and vasospasm, intracranial.

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 P52.5 to ICD-9-CMHistory

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

ICD-9-CM
772.2 NB subarachnoid hemorr
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 P52.5Overview

Is P52.5 (Intracranial nontraumatic hemorrhage of newborn) a billable code?

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

What is the ICD-9 equivalent of P52.5?

Under the General Equivalence Mappings, subarachnoid (nontraumatic) hemorrhage of newborn converts to ICD-9-CM 772.2 (NB subarachnoid hemorr). 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.