P56.0 – Hydrops fetalis due to isoimmunization

ICD-10-CM 2027 diagnosis code · Hemorrhagic and hematological disorders of newborn

Billable code

ICD-10-CM code P56.0

Code: P56.0 (claims format: P560)
Description: Hydrops fetalis due to isoimmunization
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 16. Certain conditions originating in the perinatal period (P00-P96)
Block: P50-P61 Hemorrhagic and hematological disorders of newborn
Parent codes: P56

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

P56 – Hydrops fetalis due to hemolytic disease

Excludes1 (not coded here):

hydrops fetalis NOS (P83.2)

Block P50-P61

Excludes1 (not coded here):

congenital stenosis and stricture of bile ducts (Q44.3)
Crigler-Najjar syndrome (E80.5)
Dubin-Johnson syndrome (E80.6)
Gilbert syndrome (E80.4)
hereditary hemolytic anemias (D55-D58)

Index terms for P56.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in P56

P56.9 – Hydrops fetalis due to other and unspecified hemolytic diseaseHeader

Frequently asked questions

What is ICD-10 code P56.0?

P56.0 is the ICD-10-CM code for hydrops fetalis due to isoimmunization, in the block P50-P61 (Hemorrhagic and hematological disorders of newborn).

Is P56.0 a billable code?

Yes. P56.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does P56.0 belong to?

It belongs to category P56 – Hydrops fetalis due to hemolytic disease.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.