2026 ICD-10-CM Diagnosis Code P61.1Polycythemia neonatorum

ICD-10-CM Codes›P00–P96›P50-P61›P61

ICD-10-CM P61.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P61.1 is a billable ICD-10-CM diagnosis code for polycythemia neonatorum. 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 Hemorrhagic and hematologic disorders of newborn.

Code Identity

ICD-10-CM Code
P61.1
Billable Status
Yes — Valid for Submission
Code Describes
Polycythemia neonatorum
Short Description
Polycythemia neonatorum
Same as the full description in the CMS dataset.
Parent Code
P61
Other perinatal hematological disorders

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP50-P61Hemorrhagic and hematological disorders of newborn
CategoryP61Other perinatal hematological disorders
This CodeP61.1Polycythemia neonatorum

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Complexion finding
  • Early neonatal disorder due to placental insufficiency
  • Neonatal polycythemia
  • Neonatal polycythemia due to intra-uterine growth retardation
  • Neonatal polycythemia due to placental insufficiency
  • Plethora
  • Polycythemia due to donor twin transfusion
  • Polycythemia due to maternal-fetal transfusion
  • Polycythemia neonatorum due to inherited disorder of erythropoietin production
  • Polycythemia neonatorum following blood transfusion

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.

    • Plethora
      • newborn
    • Polycythemia(secondary)
      • due to
        • donor twin
    • Polycythemia(secondary)
      • due to
        • maternal-fetal transfusion
    • Polycythemia(secondary)
      • neonatorum
    • Syndrome
      • hypertransfusion, newborn

Clinical ClassificationClinical

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

CCSR PNL011
Hemorrhagic and hematologic disorders of newborn
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Bleeding Disorders

Normally, if you get hurt, your body forms a blood clot to stop the bleeding. For blood to clot, your body needs cells called platelets and proteins known as clotting factors. If you have a bleeding disorder, you either do not have enough platelets or clotting factors or they don't work the way they should.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert P61.1 to ICD-9-CMHistory

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

ICD-9-CM
776.4 Polycythemia neonatorum
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 P61.1Overview

Is P61.1 (Other perinatal hematological disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report polycythemia neonatorum on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P61.1?

Under the General Equivalence Mappings, polycythemia neonatorum converts to ICD-9-CM 776.4 (polycythemia neonatorum). 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.