ICD-10-CM 2027 diagnosis code
P08.0Exceptionally large newborn baby
P08.0 is a valid, billable ICD-10-CM code for exceptionally large newborn baby. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About P08.0
P08.0 is the ICD-10-CM diagnosis code for Exceptionally large newborn baby. It belongs to category P08 (disorders of newborn related to long gestation and high birth weight), block P05-P08 (disorders of newborn related to length of gestation and fetal growth) and chapter 16 (certain conditions originating in the perinatal period). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within P08 (disorders of newborn related to long gestation and high birth weight), P08.0 is specifically for Exceptionally large newborn baby. Related codes cover other heavy for gestational age newborn (P08.1) and late newborn, not heavy for gestational age (P08.2).
Don't report P08.0 together with the conditions in its Excludes1 note: syndrome of infant of diabetic mother (P70.1) and syndrome of infant of mother with gestational diabetes (P70.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 795 (Normal Newborn, relative weight 0.2022), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 766.0 (Exceptionally large baby).
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to P08.0.
› From P08 Disorders of newborn related to long gestation and high birth weight
- When both birth weight and gestational age of the newborn are available, priority of assignment should be given to birth weight
- the listed conditions, without further specification, as causes of morbidity or additional care, in newborn
Broader instructions also apply from Chapter 16: Certain conditions originating in the perinatal period.
Alphabetic index entries
4 entriesTerms in the official ICD-10-CM index that lead to P08.0.
Codes whose notes reference P08.0
- P08.1Excludes1
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period
ICD-9-CM equivalent
Converter →- 766.0Exceptionally large babyexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about P08.0
Is P08.0 billable?
- Yes. P08.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can P08.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict P08.0 as a principal diagnosis.
Is P08.0 a CC or MCC?
- No. P08.0 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does P08.0 group to?
- P08.0 is used in the MS-DRG v44.0 logic for MS-DRG 795 (Normal Newborn). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for P08.0?
- The CMS General Equivalence Mappings map P08.0 to ICD-9-CM 766.0.