2026 ICD-10-CM Diagnosis Code P91.829Neonatal cerebral infarction, unspecified side

ICD-10-CM Codes›P00–P96›P90-P96›P91

ICD-10-CM P91.829
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P91.829 is a billable ICD-10-CM diagnosis code for neonatal cerebral infarction, unspecified side. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neonatal cerebral disorders.

Code Identity

ICD-10-CM Code
P91.829
Billable Status
Yes — Valid for Submission
Code Describes
Neonatal cerebral infarction, unspecified side
Short Description
Neonatal cerebral infarction, unspecified side
Same as the full description in the CMS dataset.
Parent Code
P91.82
Neonatal cerebral infarction

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP90-P96Other disorders originating in the perinatal period
CategoryP91Other disturbances of cerebral status of newborn
This CodeP91.829Neonatal cerebral infarction, unspecified side

Present on Admission (POA)Billing

P91.829 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cerebrovascular accident during operation on heart
  • Cerebrovascular accident following heart procedure
  • Cerebrovascular accident of basal ganglia
  • Cerebrovascular accident with intracranial hemorrhage
  • Chorea due to injury of head
  • Cryptogenic stroke
  • CVA during surgery
  • Hemichorea
  • Hemichorea due to cerebral infarction
  • Hemichorea due to head injury
  • Hemorrhagic cerebral infarction
  • Hemorrhagic cerebral infarction due to hypertension
  • Hemorrhagic infarction
  • Ischemic stroke
  • Neonatal epilepsy due to perinatal stroke
  • Neonatal ischemic stroke
  • Neonatal stroke
  • Pediatric arterial ischemic stroke
  • Perinatal arterial ischemic stroke of fetus and/or neonate
  • Perinatal cardiovascular disorders
  • Post-cerebrovascular accident epilepsy
  • Posttraumatic seizure

Clinical ClassificationClinical

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

CCSR PNL004
Neonatal cerebral disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Ischemic Stroke

    stroke due to brain ischemia resulting in interruption or reduction of blood flow to a part of the brain. when obstruction is due to a blood clot formed within in a cerebral blood vessel it is a thrombotic stroke. when obstruction is formed elsewhere and moved to block a cerebral blood vessel (see cerebral embolism) it is referred to as embolic stroke. wake-up stroke refers to ischemic stroke occurring during sleep while cryptogenic stroke refers to ischemic stroke of unknown origin.

Code History & ChangesHistory

Replacement P91.829 replaces the following previously assigned code(s):

  • P91.88 - Other specified disturbances of cerebral status of newborn
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P91.829Overview

Is P91.829 (Neonatal cerebral infarction) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neonatal cerebral infarction, unspecified side on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is P91.829 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for neonatal cerebral infarction, unspecified side on inpatient claims.

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.