2026 ICD-10-CM Diagnosis Code P29.2Neonatal hypertension

ICD-10-CM Codes›P00–P96›P19-P29›P29

ICD-10-CM P29.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P29.2 is a billable ICD-10-CM diagnosis code for neonatal hypertension. 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 Other specified and unspecified perinatal conditions.

Code Identity

ICD-10-CM Code
P29.2
Billable Status
Yes — Valid for Submission
Code Describes
Neonatal hypertension
Short Description
Neonatal hypertension
Same as the full description in the CMS dataset.
Parent Code
P29
Cardiovascular disorders originating in the perinatal period

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP19-P29Respiratory and cardiovascular disorders specific to the perinatal period
CategoryP29Cardiovascular disorders originating in the perinatal period
This CodeP29.2Neonatal hypertension

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign essential hypertension
  • Benign hypertension
  • Cerebrovascular accident with intracranial hemorrhage
  • Diastolic hypertension
  • Diastolic hypertension and systolic hypertension
  • Essential hypertension
  • Headache due to arterial hypertension
  • Hemorrhagic cerebral infarction
  • Hemorrhagic cerebral infarction due to hypertension
  • Hemorrhagic infarction
  • Hypertension monitoring offer default
  • Hypertension monitoring status
  • Hypertension stage 1
  • Hypertension stage 2
  • Hypertensive crisis
  • Hypertensive disorder
  • Hypertensive emergency
  • Hypertensive treatment changed
  • Intermittent hypertension
  • Labile diastolic hypertension
  • Labile systemic arterial hypertension
  • Malignant hypertension
  • Neonatal hypertension
  • On treatment for hypertension
  • Stable hypertension
  • Systolic hypertension
  • Transient hypertension

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.

    • Hypertension, hypertensive(accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
      • newborn

Clinical ClassificationClinical

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

CCSR PNL013
Other specified and unspecified perinatal conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Essential Hypertension

    hypertension that occurs without known cause, or preexisting renal disease. associated polymorphisms for a number of genes have been identified, including agt, gnb3, and ece1. omim: 145500

  • Hypertensive Crisis

    a severe, acute increase in blood pressure that may result in stroke or myocardial ischemia.

  • Grade 1 Neonatal Hypertension, AE|Grade 1 Neonatal Hypertension|Grade 1 Neonatal Hypertension, Adverse Event

    an adverse event in a newborn characterized by systolic or diastolic blood pressure above the 90th percentile but below the 95th percentile; self-limiting.

  • Grade 2 Neonatal Hypertension, AE|Grade 2 Neonatal Hypertension|Grade 2 Neonatal Hypertension, Adverse Event

    an adverse event in a newborn characterized by persistent or recurrent hypertension, with systolic or diastolic blood pressure between the 95th percentile and the 99th percentile.

  • Grade 3 Neonatal Hypertension, AE|Grade 3 Neonatal Hypertension|Grade 3 Neonatal Hypertension, Adverse Event

    an adverse event in a newborn characterized by persistent or recurrent hypertension, with systolic or diastolic blood pressure above the 99th percentile; need for antihypertensive medication.

  • Grade 4 Neonatal Hypertension, AE|Grade 4 Neonatal Hypertension|Grade 4 Neonatal Hypertension, Adverse Event

    a hypertensive adverse event in a newborn characterized by life-threatening consequences (e.g. malignant hypertension: shock, cardiac failure or neonatal encephalopathy).

  • Grade 5 Neonatal Hypertension, AE|Grade 5 Neonatal Hypertension|Grade 5 Neonatal Hypertension, Adverse Event

    a hypertensive adverse event in a newborn which results in death.

  • Neonatal Hypertension

    abnormally high blood pressure in a newborn child.

  • Neonatal Hypertension, AE|Hypertension neonatal|Neonatal Hypertension|Neonatal Hypertension, Adverse Event

    an adverse event in a newborn characterized by abnormally high blood pressure.

  • Benign Essential Hypertension

    a condition of mild to moderate high blood pressure that has no identifiable cause.

  • Diastolic Hypertension

    hypertension characterized diastolic blood pressure greater than 90 mmhg on two occasions.

  • Systolic Hypertension

    abnormally high systolic blood pressure.

  • Malignant Hypertension

    severe hypertension that is characterized by rapid onset of extremely high blood pressure.

Patient EducationClinical

High Blood Pressure

Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls.

The full article covers:

  • What is blood pressure?
  • How is high blood pressure diagnosed?
  • What are the different types of high blood pressure?
  • Why do I need to worry about high blood pressure?
  • What are the treatments for high blood pressure?

Read the full article at MedlinePlus

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

Convert P29.2 to ICD-9-CMHistory

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

ICD-9-CM
779.89 Perinatal condition 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 P29.2Overview

Is P29.2 (Cardiovascular disorders originating in the perinatal period) a billable code?

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

What is the ICD-9 equivalent of P29.2?

Under the General Equivalence Mappings, neonatal hypertension converts to ICD-9-CM 779.89 (perinatal condition NEC). 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.