When is ICD-10 code P04 used?

Doctors, hospitals, and insurers may use ICD-10 code P04 when recording newborn affected by noxious substances transmitted via placenta or breast milk in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code P04 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 P04: Newborn affected by noxious substances transmitted via placenta or breast milk

Name: ICD-10 Code P04: Newborn affected by noxious substances transmitted via placenta or breast milk
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:28:56.293Z

P04 is an ICD-10 diagnosis entry used to group records related to Newborn affected by noxious substances transmitted via placenta or breast milk. 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 21 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 affected by noxious substances transmitted via placenta or breast milk 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

P00-P04Newborn affected by maternal factors and by complications of pregnancy, labor, and delivery

currentP00-P04

Official coding notes

Includes

nonteratogenic effects of substances transmitted via placenta

Applicable to

any current condition in newborn, if applicable

Excludes2 (may code together if documented)

congenital malformations (Q00-Q99)
encounter for observation of newborn for suspected diseases and conditions ruled out (Z05.-)
neonatal jaundice from excessive hemolysis due to drugs or toxins transmitted from mother (P58.4)
newborn in contact with and (suspected) exposures hazardous to health not transmitted via placenta or breast milk (Z77.-)

Code first

any current condition in newborn, if applicable

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

P00Newborn affected by maternal conditions that may be unrelated to present pregnancy P01Newborn affected by maternal complications of pregnancy P02Newborn affected by complications of placenta, cord and membranes P03Newborn affected by other complications of labor and delivery

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

P04

Replacement codes

P04.0 — Newborn affected by maternal anesthesia and analgesia in pregnancy, labor and deliveryP04.2 — Newborn affected by maternal use of tobaccoP04.3 — Newborn affected by maternal use of alcoholP04.5 — Newborn affected by maternal use of nutritional chemical substancesP04.6 — Newborn affected by maternal exposure to environmental chemical substancesP04.9 — Newborn affected by maternal noxious substance, unspecified

Common synonyms

Newborn affected by noxious substances transmitted via placenta or breast milk

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.