DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

P56 Hydrops fetalis due to hemolytic disease

  • Header · not billable

P56 is not billable. The category heads 3 billable codes in FY2027, grouped under 2 subdivisions.

Index → code

  • Dropsy, dropsicalnewborn due to isoimmunization → P56.0
  • Hydropsfetalisdue tohemolytic disease → P56.90
  • Hydropsfetalisdue toRh incompatibility → P56.0

Where it sits

  1. Chapter 16 Certain conditions originating in the perinatal period (P00-P96)
  2. P50-P61 Hemorrhagic and hematological disorders of newborn (P50-P61)
  3. P56 Hydrops fetalis due to hemolytic disease
Billable codes
3
Subdivisions
2
CC / MCC codes
0 / 3
HCC V28 codes
3
New FY2027
0
Index entries
12

Codes in P56

  1. P56.0
    Hydrops fetalis due to isoimmunization
    BillableMCC109
  2. P56.9
    Hydrops fetalis due to other and unspecified hemolytic disease
    Header
  3. P56.90
    Hydrops fetalis due to unspecified hemolytic disease
    BillableMCC109
  4. P56.99
    Hydrops fetalis due to other hemolytic disease
    BillableMCC109

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At P56

Excludes1

  • hydrops fetalis NOS (P83.2) P83.2

Notes that also apply

Block P50-P61 instructions (Excludes1 5): printed on the block page.

Chapter 16 instructions (Notes 1, Includes 1, Excludes2 5): printed on the chapter 16 page.

Index entries

  • Dropsy, dropsicalnewborn due to isoimmunization → P56.0
  • Hydropsfetalisdue toABO isoimmunization → P56.0
  • Hydropsfetalisdue toisoimmunization (ABO) (Rh) → P56.0
  • Hydropsfetalisdue toRh incompatibility → P56.0
  • Hydropsnewborn (idiopathic)due toABO isoimmunization → P56.0
  • Hydropsnewborn (idiopathic)due toisoimmunization (ABO) (Rh) → P56.0
  • Hydropsnewborn (idiopathic)due toRh incompatibility → P56.0
  • Isoimmunization NECnewbornwithhydrops fetalis → P56.0
  • Hydropsfetalisdue tohemolytic disease → P56.90
  • Hydropsnewborn (idiopathic)due tohemolytic disease → P56.90
  • Hydropsfetalisdue tohemolytic diseasespecified NEC → P56.99
  • Hydropsnewborn (idiopathic)due tohemolytic diseasespecified NEC → P56.99

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy