ICD-10-CM 2027
ICD-10 code for neonatorum polycythemia
From the official ICD-10-CM alphabetic index entry “Polycythemia (secondary) › neonatorum”. Page updated September 29, 2026.
About coding neonatorum polycythemia
The ICD-10-CM code for neonatorum polycythemia is P61.1 (Polycythemia neonatorum).
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.
Common questions about neonatorum polycythemia ICD-10 codes
What is the ICD-10 code for neonatorum polycythemia?
- P61.1 — Polycythemia neonatorum.
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.