ICD-10-CM 2027
ICD-10 code for transitory neonatal leukopenia
From the official ICD-10-CM alphabetic index entry “Leukopenia › transitory neonatal”. Page updated September 29, 2026.
About coding transitory neonatal leukopenia
The ICD-10-CM code for transitory neonatal leukopenia is P61.5 (Transient neonatal neutropenia).
Within P61 (other perinatal hematological disorders), P61.5 is specifically for transient neonatal neutropenia. Related codes cover transient neonatal thrombocytopenia (P61.0), polycythemia neonatorum (P61.1), anemia of prematurity (P61.2), congenital anemia from fetal blood loss (P61.3), other congenital anemias, not elsewhere classified (P61.4), other transient neonatal disorders of coagulation (P61.6), other specified perinatal hematological disorders (P61.8) and perinatal hematological disorder, unspecified (P61.9).
Don't report P61.5 together with the conditions in its Excludes1 note: congenital neutropenia (nontransient) (D70.0).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
Don't confuse with (Excludes1 for P61.5)
- congenital neutropenia (nontransient) (D70.0)
Common questions about transitory neonatal leukopenia ICD-10 codes
What is the ICD-10 code for transitory neonatal leukopenia?
- P61.5 — Transient neonatal neutropenia.
Is P61.5 billable?
- Yes. P61.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can P61.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict P61.5 as a principal diagnosis.
Is P61.5 a CC or MCC?
- P61.5 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.