2026 ICD-10-CM Diagnosis Code P08.1Other heavy for gestational age newborn

ICD-10-CM Codes›P00–P96›P05-P08›P08

ICD-10-CM P08.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P08.1 is a billable ICD-10-CM diagnosis code for other heavy for gestational age newborn. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as abnormal weight. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified perinatal conditions.

Code Identity

ICD-10-CM Code
P08.1
Billable Status
Yes — Valid for Submission
Code Describes
Other heavy for gestational age newborn
Short Description
Other heavy for gestational age newborn
Same as the full description in the CMS dataset.
Parent Code
P08
Disorders of newborn related to long gestation and high birth weight

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP05-P08Disorders of newborn related to length of gestation and fetal growth
CategoryP08Disorders of newborn related to long gestation and high birth weight
This CodeP08.1Other heavy for gestational age newborn

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal weight
  • Baby birth weight 4400-4499g
  • Baby birth weight equal to 90 percent to 96 percent
  • Birth weight abnormality
  • Finding of birth weight centile
  • Heavy-for-dates at birth regardless of gestation period
  • High birth weight
  • Large for gestational age newborn

Tabular List NotesGuidance

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

Inclusion Terms

  • Other newborn heavy- or large-for-dates regardless of period of gestation
  • Usually implies a birth weight of 4000 g. to 4499 g.

Type 1 Excludes

  • newborn with a birth weight of 4500 or more P08.0
  • syndrome of infant of diabetic mother P70.1
  • syndrome of infant of mother with gestational diabetes P70.0

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.

    • Birth
      • weight
        • 4000 grams to 4499 grams
    • Heavy-for-dates NEC(infant) (4000g to 4499g)
    • Large
      • baby (regardless of gestational age) (4000g to 4499g)
    • Large-for-dates NEC(infant) (4000g to 4499g)

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

Birth Weight

Birth weight is the first weight of your baby, taken just after being born. A low birth weight means that the baby is less than 5 pounds, 8 ounces. A high birth weight means that the baby is more than 8 pounds, 13 ounces.

The full article covers:

  • What is birth weight?
  • What can cause low birth weight?
  • What problems can low birth weight cause?
  • What can cause high birth weight?
  • What problems can high birth weight cause?
  • Can birth weight problems be prevented?

Read the full article at MedlinePlus

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

Convert P08.1 to ICD-9-CMHistory

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

ICD-9-CM
766.1 Heavy-for-date infan NEC
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 P08.1Overview

Is P08.1 a billable code?

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

What is the ICD-9 equivalent of P08.1?

Under the General Equivalence Mappings, other heavy for gestational age newborn converts to ICD-9-CM 766.1 (heavy-for-date infan NEC). 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.