2026 ICD-10-CM Diagnosis Code P03.810Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm before the onset of labor

ICD-10-CM Codes›P00–P96›P00-P04›P03

ICD-10-CM P03.810
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P03.810 is a billable ICD-10-CM diagnosis code for newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm before the onset of labor. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as abnormal fetal heart beat noted before labor in liveborn infant. 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
P03.810
Billable Status
Yes — Valid for Submission
Code Describes
Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm before the onset of labor
Short Description
NB aff by abnlt in fetal heart rate or rhym bef onset labor
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 CodeP03.810Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm before the onset of labor

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal fetal heart beat noted before labor in liveborn infant
  • Liveborn with prelabor abnormal heart beat
  • Liveborn with prelabor fetal distress

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
          • before onset of labor
    • Dysrhythmia
      • cardiac
        • newborn
          • occurring before birth
            • before onset of labor
    • Newborn(infant) (liveborn) (singleton)
      • affected by
        • heart rate abnormalities
          • intrauterine
            • before onset of labor

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 P03.810 to ICD-9-CMHistory

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

ICD-9-CM
763.81 Ab ftl hrt rt/rh b/f lab
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 P03.810Overview

Is P03.810 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 before the onset of labor on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P03.810?

Under the General Equivalence Mappings, newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm before the onset of labor converts to ICD-9-CM 763.81 (ab ftl hrt rt/rh b/f lab). 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.