2027 ICD-10-CM Diagnosis Code P05.19Newborn small for gestational age, other

ICD-10-CM Codes›P00–P96›P05-P08›P05

ICD-10-CM P05.19
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

P05.19 is a billable ICD-10-CM diagnosis code for newborn small for gestational age, other. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 795. 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
P05.19
Billable Status
Yes — Valid for Submission
Code Describes
Newborn small for gestational age, other
Short Description
Newborn small for gestational age, other
Same as the full description in the CMS dataset.
Parent Code
P05.1
Newborn small for gestational age

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP05-P08Disorders of newborn related to length of gestation and fetal growth
CategoryP05Disorders of newborn related to slow fetal growth and fetal malnutrition
This CodeP05.19Newborn small for gestational age, other

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to P05.19: its own notes plus those printed at 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

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.

  • Newborn small for gestational age, 2500 grams and over

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 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 P05.19, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming P05.19: they are not reported together with it, unless the two conditions are unrelated.

  • P05.2 Newborn affected by fetal (intrauterine) malnutrition not light or small for gestational age
    newborn affected by fetal malnutrition with small for gestational age (P05.1-) names P05.1-, which includes this code
  • P07.0 Extremely low birth weight newborn
    low birth weight due to slow fetal growth and fetal malnutrition (P05.-) names P05.-, which includes this code
  • P07.1 Other low birth weight newborn
    low birth weight due to slow fetal growth and fetal malnutrition (P05.-) names P05.-, which includes this code

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

Convert P05.19 to ICD-9-CMHistory

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

ICD-9-CM
764.00 Light-for-dates wtNOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About P05.19Overview

What is the ICD-10 code for newborn small for gestational age, other?

The ICD-10-CM code for newborn small for gestational age, other is P05.19 (sometimes written as P0519). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is P05.19 (Newborn small for gestational age) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report newborn small for gestational age, other on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does P05.19 group to?

When newborn small for gestational age, other 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.

What is the ICD-9 equivalent of P05.19?

Under the General Equivalence Mappings, newborn small for gestational age, other converts to ICD-9-CM 764.00 (light-for-dates wtNOS). The mapping is approximate, so confirm the match fits the documentation.