What does ICD-10 code P05.0 mean?

ICD-10 code P05.0 is the standardized code used for newborn light for gestational age in medical records and coding systems.

When is ICD-10 code P05.0 used?

Doctors, hospitals, and insurers may use ICD-10 code P05.0 when recording newborn light for gestational age in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code P05.0 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code P05.0: Newborn light for gestational age

Name: ICD-10 Code P05.0: Newborn light for gestational age
Creator: HealthAssure Clinical Team
Published: 2026-05-26T14:50:16.732Z

P05.0 is an ICD-10 diagnosis entry used to group records related to Newborn light for gestational age. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Certain conditions originating in the perinatal period (P00-P96).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Certain conditions originating in the perinatal period (P00-P96).

When is it used?

May be used when a clinician documents newborn light for gestational age in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

16Certain conditions originating in the perinatal period (P00-P96)

block

P05-P08Disorders of newborn related to length of gestation and fetal growth

Official coding notes

Inclusion terms

Newborn light-for-dates
Weight below but length above 10th percentile for gestational age

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

PediatricianNeonatologist

Sibling codes

P05.1Newborn small for gestational age P05.2Newborn affected by fetal (intrauterine) malnutrition not light or small for gestational agebillable P05.9Newborn affected by slow intrauterine growth, unspecifiedbillable

Mapped diagnoses and classifications

SNOMED_CT 64177003high

Light-for-dates with signs of fetal malnutrition

Source: SNOMED International ICD-10 map

SNOMED_CT 189445003high

Light-for-dates without fetal malnutrition

Source: SNOMED International ICD-10 map

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

P05.0

Replacement codes

P05.00 — Newborn light for gestational age, unspecified weightP05.01 — Newborn light for gestational age, less than 500 gramsP05.02 — Newborn light for gestational age, 500-749 gramsP05.03 — Newborn light for gestational age, 750-999 gramsP05.04 — Newborn light for gestational age, 1000-1249 gramsP05.05 — Newborn light for gestational age, 1250-1499 gramsP05.06 — Newborn light for gestational age, 1500-1749 gramsP05.07 — Newborn light for gestational age, 1750-1999 gramsP05.08 — Newborn light for gestational age, 2000-2499 gramsP05.09 — Newborn light for gestational age, 2500 grams and over

Common synonyms

Newborn light for gestational age

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.