2027 ICD-10-CM Diagnosis Code P07.03Extremely low birth weight newborn, 750-999 grams

ICD-10-CM Codes›P00–P96›P05-P08›P07

ICD-10-CM P07.03
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P07.03 is a billable ICD-10-CM diagnosis code for extremely low birth weight newborn, 750-999 grams. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 790. Coders also document this condition as baby birth weight equal to 751g-1kg. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Short gestation; low birth weight; and fetal growth retardation.

Code Identity

ICD-10-CM Code
P07.03
Billable Status
Yes — Valid for Submission
Code Describes
Extremely low birth weight newborn, 750-999 grams
Short Description
Extremely low birth weight newborn, 750-999 grams
Same as the full description in the CMS dataset.
Parent Code
P07.0
Extremely low birth weight newborn

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP05-P08Disorders of newborn related to length of gestation and fetal growth
CategoryP07Disorders of newborn related to short gestation and low birth weight, not elsewhere classified
This CodeP07.03Extremely low birth weight newborn, 750-999 grams

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Baby birth weight equal to 751g-1kg
  • Birth weight 1500 gram or less

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P07.03: its own notes plus those printed at P07.0, P07, 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 P07 Disorders of newborn related to short gestation and low birth weight, not elsewhere classified applies to 27 codes
  • the listed conditions, without further specification, as the cause 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

Excludes1

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

From P07.0 Extremely low birth weight newborn applies to 4 codes
  • low birth weight due to slow fetal growth and fetal malnutrition (P05.-)

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 P07 Disorders of newborn related to short gestation and low birth weight, not elsewhere classified applies to 27 codes
  • When both birth weight and gestational age of the newborn are available, both should be coded with birth weight sequenced before gestational age
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.

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 PNL002
Short gestation; low birth weight; and fetal growth retardation
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 P07.03 to ICD-9-CMHistory

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

ICD-9-CM
765.03 Extreme immatur 750-999g
Approximate The match is approximate rather than exact.
ICD-9-CM
765.13 Preterm NEC 750-999g
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 P07.03Overview

What is the ICD-10 code for extremely low birth weight newborn, 750-999 grams?

The ICD-10-CM code for extremely low birth weight newborn, 750-999 grams is P07.03 (sometimes written as P0703). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is P07.03 (Extremely low birth weight newborn) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report extremely low birth weight newborn, 750-999 grams on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does P07.03 group to?

When extremely low birth weight newborn, 750-999 grams is the principal diagnosis on an inpatient stay, it groups to MS-DRG 790 (extreme Immaturity or Respiratory Distress Syndrome, Neonate), which carries a relative weight of 6.0142. Higher weights mean higher Medicare reimbursement.

Can P07.03 be reported with a code from P05?

Not as a rule. The Excludes1 note at P07.0, which applies to P07.03, lists "low birth weight due to slow fetal growth and fetal malnutrition (P05.-)". 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 P07.03?

Under the General Equivalence Mappings, extremely low birth weight newborn, 750-999 grams converts to ICD-9-CM 765.03 (extreme immatur 750-999g) and 765.13 (preterm NEC 750-999g). The mapping is approximate, so confirm the match fits the documentation.