2027 ICD-10-CM Diagnosis Code P08.0Exceptionally large newborn baby

ICD-10-CM Codes›P00–P96›P05-P08›P08

ICD-10-CM P08.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P08.0 is a billable ICD-10-CM diagnosis code for exceptionally large newborn baby. 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 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
P08.0
Billable Status
Yes — Valid for Submission
Code Describes
Exceptionally large newborn baby
Short Description
Exceptionally large newborn baby
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 CodeP08.0Exceptionally large newborn baby

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal weight
  • Baby birth weight equal to or greater than 96 percent
  • Birth weight abnormality
  • Exceptionally large at birth
  • Finding of birth weight centile
  • High birth weight

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P08.0: its own notes plus those printed at P08 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 P08 Disorders of newborn related to long gestation and high birth weight applies to 4 codes
  • the listed conditions, without further specification, as causes of morbidity or additional care, in newborn
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

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Usually implies a birth weight of 4500 g. or more

Excludes1

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

  • syndrome of infant of diabetic mother (P70.1)
  • syndrome of infant of mother with gestational diabetes (P70.0)

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 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 P08 Disorders of newborn related to long gestation and high birth weight applies to 4 codes
  • When both birth weight and gestational age of the newborn are available, priority of assignment should be given to birth weight
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 P08.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming P08.0: they are not reported together with it, unless the two conditions are unrelated.

  • P08.1 Other heavy for gestational age newborn
    newborn with a birth weight of 4500 or more (P08.0)

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

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 P08.0 to ICD-9-CMHistory

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

ICD-9-CM
766.0 Exceptionally large baby
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About P08.0Overview

What is the ICD-10 code for exceptionally large newborn baby?

The ICD-10-CM code for exceptionally large newborn baby is P08.0 (sometimes written as P080). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is P08.0 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report exceptionally large newborn baby on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does P08.0 group to?

When exceptionally large newborn baby 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 P08.0 be reported with P70.1?

Not as a rule. The Excludes1 note on P08.0 lists "syndrome of infant of diabetic mother (P70.1)". 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 P08.0?

Under the General Equivalence Mappings, exceptionally large newborn baby converts to ICD-9-CM 766.0 (exceptionally large baby). The mapping is a direct match.