2026 ICD-10-CM Diagnosis Code P03.819Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm, unspecified as to time of onset

ICD-10-CM Codes›P00–P96›P00-P04›P03

ICD-10-CM P03.819
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P03.819 is a billable ICD-10-CM diagnosis code for newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm, unspecified as to time of onset. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Newborn affected by maternal conditions or complications of labor/delivery.

Code Identity

ICD-10-CM Code
P03.819
Billable Status
Yes — Valid for Submission
Code Describes
Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm, unspecified as to time of onset
Short Description
NB aff by abnlt in fetal heart rate or rhym, unsp time onset
Parent Code
P03.81
Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP00-P04Newborn affected by maternal factors and by complications of pregnancy, labor, and delivery
CategoryP03Newborn affected by other complications of labor and delivery
This CodeP03.819Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm, unspecified as to time of onset

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Arrhythmia(auricle)(cardiac)(juvenile)(nodal)(reflex)(supraventricular)(transitory)(ventricle)
      • newborn
        • occurring before birth
    • Dysrhythmia
      • cardiac
        • newborn
          • occurring before birth
    • Newborn(infant) (liveborn) (singleton)
      • affected by
        • heart rate abnormalities
          • intrauterine

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PNL010
Newborn affected by maternal conditions or complications of labor/delivery
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert P03.819 to ICD-9-CMHistory

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

ICD-9-CM
763.83 Ab ftl hrt rt/rhy NOS
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P03.819Overview

Is P03.819 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm, unspecified as to time of onset on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P03.819?

Under the General Equivalence Mappings, newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm, unspecified as to time of onset converts to ICD-9-CM 763.83 (ab ftl hrt rt/rhy NOS). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.