2026 ICD-10-CM Diagnosis Code P90Convulsions of newborn

ICD-10-CM Codes›P00–P96›P90-P96›P90

ICD-10-CM P90
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P90 is a billable ICD-10-CM diagnosis code for convulsions 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 Neonatal cerebral disorders.

Code Identity

ICD-10-CM Code
P90
Billable Status
Yes — Valid for Submission
Code Describes
Convulsions of newborn
Chapter
P90-P96
Other disorders originating in the perinatal period

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP90-P96Other disorders originating in the perinatal period
CategoryP90Convulsions of newborn
This CodeP90Convulsions of newborn

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute repetitive seizure
  • Acute seizure due to infection of central nervous system
  • Central convulsion
  • Choreoathetosis
  • Daily seizures
  • DEND syndrome
  • Disorder of beta and omega amino acid metabolism
  • Disorder of gamma aminobutyric acid metabolism
  • Disorder of lysine and hydroxylysine metabolism
  • EEG abnormality with seizure
  • Emergency epilepsy treatment since last appointment
  • Epilepsy monitoring status
  • Epileptic cry
  • Folinic acid responsive developmental and epileptic encephalopathy
  • Genetic syndromic childhood obesity
  • Hereditary cerebellar atrophy
  • ICCA syndrome
  • Intellectual disability, seizures, hypotonia, ophthalmologic, skeletal anomalies syndrome
  • Intellectual disability, seizures, macrocephaly, obesity syndrome
  • Lethal neonatal spasticity, epileptic encephalopathy syndrome
  • Many seizures a day
  • Neonatal diabetes mellitus
  • Neonatal focal automatism epileptic seizure
  • Neonatal focal autonomic epileptic seizure
  • Neonatal focal behavioral arrest epileptic seizure
  • Neonatal focal clonic epileptic seizure
  • Neonatal focal electro-clinical epileptic seizure
  • Neonatal focal electrographic-only epileptic seizure
  • Neonatal focal epileptic seizure
  • Neonatal focal epileptic spasms
  • Neonatal focal motor electro-clinical epileptic seizure
  • Neonatal focal myoclonic epileptic seizure
  • Neonatal focal non-motor electro-clinical epileptic seizure
  • Neonatal focal sequential electro-clinical epileptic seizure
  • Neonatal focal tonic epileptic seizure
  • Neonatal seizure
  • Neurodevelopmental delay, seizures, ophthalmic anomalies, osteopenia, cerebellar atrophy syndrome
  • Paroxysmal choreoathetosis
  • Paroxysmal kinesigenic dyskinesia
  • Primary hyperaldosteronism, seizures, neurological abnormalities syndrome
  • Pyridoxine-dependent developmental and epileptic encephalopathy
  • Recurrent seizure
  • Seizure
  • Seizure co-occurrent and due to psychoactive substance withdrawal
  • Seizure co-occurrent and due to sedative withdrawal
  • Seizure co-occurrent and due to substance withdrawal
  • Seizure disorder
  • Seizures and intellectual disability due to hydroxylysinuria
  • Seizures complicating infection
  • Seizures complicating infection in the newborn
  • Seizures complicating intracranial hemorrhage
  • Seizures complicating intracranial hemorrhage in the newborn
  • Self-limited neonatal epilepsy
  • Situation-related seizures
  • Tetanic convulsion
  • Traumatic injury due to seizure

Tabular List NotesGuidance

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

Type 1 Excludes

  • benign myoclonic epilepsy in infancy G40.3
  • benign neonatal convulsions familial G40.3

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.

    • Convulsions(idiopathic)
      • infantile
    • Convulsions(idiopathic)
      • newborn
    • Fit
      • newborn
    • Newborn(infant) (liveborn) (singleton)
      • convulsion
    • Newborn(infant) (liveborn) (singleton)
      • seizure
    • Seizure(s)
      • newborn

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

  • Benign Familial Convulsion|Benign Familal Neonatal Seizures|Benign Familial Convulsions|Benign Familial Neonatal Seizures

    a group of genetically-determined conditions characterized by a wide spectrum of seizure types occurring in otherwise healthy newborn infants that start during the first week of life and spontaneously disappear between the first and twelfth months of life.

  • Neonatal Seizure

    abnormal hypersynchronous electrical activity in the brain of a newborn which may be associated with stereotyped movements or autonomic changes.

Patient EducationClinical

Seizures

Seizures are symptoms of a brain problem. They happen because of sudden, abnormal electrical activity in the brain. When people think of seizures, they often think of convulsions in which a person's body shakes rapidly and uncontrollably. Not all seizures cause convulsions. There are many types of seizures and some have mild symptoms.

Read the full article at MedlinePlus

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

Convert P90 to ICD-9-CMHistory

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

ICD-9-CM
779.0 Convulsions in newborn
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 P90Overview

Is P90 (Convulsions of newborn) a billable code?

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

What is the ICD-9 equivalent of P90?

Under the General Equivalence Mappings, convulsions of newborn converts to ICD-9-CM 779.0 (convulsions in newborn). The mapping is a direct match.

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.