2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P83.1 is a billable ICD-10-CM diagnosis code for neonatal erythema toxicum. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 795. Coders also document this condition as erythroderma in infancy. 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.

  • Erythroderma in infancy
  • Exanthematous disorder
  • Neonatal dermatitis
  • Neonatal erythroderma
  • Neonatal toxic erythema
  • Toxic urticated erythema

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P83.1: its own notes plus those printed at P83 and Chapter 16. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 16 (P00-P96) Certain conditions originating in the perinatal period applies to 463 codes
  • conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From P83 Other conditions of integument specific to newborn applies to 11 codes
  • congenital malformations of skin and integument (Q80-Q84)
  • hydrops fetalis due to hemolytic disease (P56.-)
  • neonatal skin infection (P39.4)
  • staphylococcal scalded skin syndrome (L00)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From P83 Other conditions of integument specific to newborn applies to 11 codes
  • cradle cap (L21.0)
  • diaper [napkin] dermatitis (L22)
From Chapter 16 (P00-P96) Certain conditions originating in the perinatal period applies to 463 codes
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • tetanus neonatorum (A33)

Notes

General instructions on how these codes are used.

From Chapter 16 (P00-P96) Certain conditions originating in the perinatal period applies to 463 codes
  • Codes from this chapter are for use on newborn records only, never on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name P83.1, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming P83.1: they are not reported together with it, unless the two conditions are unrelated.

  • L53.0 Toxic erythema
    neonatal erythema toxicum (P83.1)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

  • Erythema Toxicum Neonatorum

    a benign, self-limited eruption of vesicles, pustules, papules and macules seen in newborns. an eosinophilic infiltrate can be isolated suggesting an immune-mediated reaction in the skin.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About P83.1Overview

What is the ICD-10 code for neonatal erythema toxicum?

The ICD-10-CM code for neonatal erythema toxicum is P83.1 (sometimes written as P831). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

What MS-DRG does P83.1 group to?

When neonatal erythema toxicum is the principal diagnosis on an inpatient stay, it groups to MS-DRG 795 (normal Newborn), which carries a relative weight of 0.2022. Higher weights mean higher Medicare reimbursement.

Can P83.1 be reported with a code from P56?

Not as a rule. The Excludes1 note at P83, which applies to P83.1, lists "hydrops fetalis due to hemolytic disease (P56.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

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.