2026 ICD-10-CM Diagnosis Code P83.1Neonatal erythema toxicum

ICD-10-CM Codes›P00–P96›P80-P83›P83

ICD-10-CM P83.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P83.1 is a billable ICD-10-CM diagnosis code for neonatal erythema toxicum. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as dermatitis of the newborn. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified perinatal conditions.

Code Identity

ICD-10-CM Code
P83.1
Billable Status
Yes — Valid for Submission
Code Describes
Neonatal erythema toxicum
Short Description
Neonatal erythema toxicum
Same as the full description in the CMS dataset.
Parent Code
P83
Other conditions of integument specific to newborn

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP80-P83Conditions involving the integument and temperature regulation of newborn
CategoryP83Other conditions of integument specific to newborn
This CodeP83.1Neonatal erythema toxicum

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Dermatitis of the newborn
  • Erythroderma in infancy
  • Exanthematous disorder
  • Neonatal erythroderma
  • Neonatal toxic erythema
  • Toxic urticated erythema

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.

    • Erythema, erythematous(infectional) (inflammation)
      • neonatorum
        • toxic
    • Erythema, erythematous(infectional) (inflammation)
      • toxic, toxicum NEC
        • 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

Patient EducationClinical

Common Infant and Newborn Problems

It is hard when your baby is sick. Common health problems in babies include colds, coughs, fevers, and vomiting. Babies also commonly have skin problems, like diaper rash or cradle cap.

Read the full article at MedlinePlus

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

Convert P83.1 to ICD-9-CMHistory

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

ICD-9-CM
778.8 NB integument cond 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 P83.1Overview

Is P83.1 (Other conditions of integument specific to newborn) a billable code?

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

What is the ICD-9 equivalent of P83.1?

Under the General Equivalence Mappings, neonatal erythema toxicum converts to ICD-9-CM 778.8 (NB integument cond 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.