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ICD-10-CM 2027 diagnosis code

P61.1Polycythemia neonatorum

✓ Billable / specific

P61.1 is a valid, billable ICD-10-CM code for polycythemia neonatorum. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About P61.1

P61.1 is the ICD-10-CM diagnosis code for polycythemia neonatorum. It belongs to category P61 (other perinatal hematological disorders), block P50-P61 (hemorrhagic and hematological disorders of newborn) and chapter 16 (certain conditions originating in the perinatal period). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within P61 (other perinatal hematological disorders), P61.1 is specifically for polycythemia neonatorum. Related codes cover transient neonatal thrombocytopenia (P61.0), anemia of prematurity (P61.2), congenital anemia from fetal blood loss (P61.3), other congenital anemias, not elsewhere classified (P61.4), transient neonatal neutropenia (P61.5), other transient neonatal disorders of coagulation (P61.6), other specified perinatal hematological disorders (P61.8) and perinatal hematological disorder, unspecified (P61.9).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 794 (Neonate with Other Significant Problems, relative weight 1.4935), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 776.4 (polycythemia neonatorum).

Notes that apply from higher levels

Instructions written at a parent level also apply to P61.1.

› From P61 Other perinatal hematological disorders
Excludes1
  • transient hypogammaglobulinemia of infancy (D80.7)

Broader instructions also apply from P50-P61 Hemorrhagic and hematological disorders of newborn and Chapter 16: Certain conditions originating in the perinatal period.

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to P61.1.

Codes whose notes reference P61.1

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 776.4Polycythemia neonatorumexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about P61.1

Is P61.1 billable?

Yes. P61.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can P61.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict P61.1 as a principal diagnosis.

Is P61.1 a CC or MCC?

No. P61.1 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does P61.1 group to?

P61.1 is used in the MS-DRG v44.0 logic for MS-DRG 794 (Neonate with Other Significant Problems). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for P61.1?

The CMS General Equivalence Mappings map P61.1 to ICD-9-CM 776.4.