P55
Hemolytic disease of newborn
P55 is a non-billable ICD-10-CM code category for hemolytic disease of newborn. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are P55.0 Rh isoimmunization of newborn; P55.1 ABO isoimmunization of newborn; P55.8 Other hemolytic diseases of newborn and P55.9 Hemolytic disease of newborn, unspecified. Its coding notes include 5 Excludes1 entries and 5 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 16 codes are never used on the maternal record, and chapter 15 codes are never used on the newborn record. Chapter 16 codes can be used for life if the condition persists.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (5 notes)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- tetanus neonatorum (A33)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- 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
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are for use on newborn records only, never on maternal records