Hydrops fetalis due to hemolytic disease (P56) ICD-10-CM
The P56 code range covers hydrops fetalis due to hemolytic disease with 5 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- hydrops fetalis NOS P83.2
Codes in the P56 Range 5 codes · 3 billable
About the P56 Code Range
In newborns, this condition belongs to a group of blood and bleeding disorders that originate around birth.
The subdivisions distinguish the stated cause of hydrops fetalis. P56.0 specifies isoimmunization. P56.9 groups other and unspecified hemolytic disease, then separates unspecified disease (P56.90) from other disease (P56.99).
Questions About This Page
How many billable codes are in the P56 range?
Of the 5 codes in this range, 3 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 P56 range classify?
The range classifies hydrops fetalis due to hemolytic disease. 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.
