FY2027 ICD-10-CM reference
P55: Hemolytic disease of newborn
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Hemolytic disease of newborn. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- P55.0: Rh isoimmunization of newbornBillable code
- P55.1: ABO isoimmunization of newbornBillable code
- P55.8: Other hemolytic diseases of newbornBillable code
- P55.9: Hemolytic disease of newborn, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
Codes from this chapter are for use on newborn records only, never on maternal records
Source: P00-P96 (chapter, inherited).
Includes
conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
Source: P00-P96 (chapter, inherited).
Excludes2
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Source: P00-P96 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: P00-P96 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: P00-P96 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: P00-P96 (chapter, inherited).
Excludes2
tetanus neonatorum (A33)
Source: P00-P96 (chapter, inherited).
Excludes1
congenital stenosis and stricture of bile ducts (Q44.3)
Source: P50-P61 (section, inherited).
Excludes1
Crigler-Najjar syndrome (E80.5)
Source: P50-P61 (section, inherited).
Excludes1
Dubin-Johnson syndrome (E80.6)
Source: P50-P61 (section, inherited).
Excludes1
Gilbert syndrome (E80.4)
Source: P50-P61 (section, inherited).
Excludes1
hereditary hemolytic anemias (D55-D58)
Source: P50-P61 (section, inherited).
Compare the FY2027 additions, removals and billable-status changes
What does P55 mean in FY2027?
The official ICD-10-CM descriptor is Hemolytic disease of newborn. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is P55 billable in FY2027?
The FY2027 order file marks P55 as a nonbillable heading. Select a complete billable child code.
Does P55 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition