Hemolytic disease of newborn (P55) ICD-10-CM
The P55 code range covers hemolytic disease of newborn with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the P55 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the P55 range.
Erythroblastosis, Fetal
A condition characterized by the abnormal presence of ERYTHROBLASTS in the circulation of the FETUS or NEWBORNS. It is a disorder due to BLOOD GROUP INCOMPATIBILITY, such as the maternal alloimmunization by fetal antigen RH FACTORS leading to HEMOLYSIS of ERYTHROCYTES, hemolytic anemia (ANEMIA, HEMOLYTIC), general edema (HYDROPS FETALIS), and SEVERE JAUNDICE IN NEWBORN.
About the P55 Code Range
Hemolytic disease of a newborn involves the breakdown of red blood cells. In erythroblastosis, a blood group mismatch can cause the mother’s immune response to break down fetal or newborn red blood cells.
The subdivisions distinguish Rh isoimmunization (P55.0) from ABO isoimmunization (P55.1). They also identify other hemolytic diseases (P55.8) and hemolytic disease that is unspecified (P55.9).
Questions About This Page
How many billable codes are in the P55 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the P55 range classify?
The range classifies hemolytic disease of newborn. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
