P56.0 — Hydrops fetalis due to isoimmunization
P56.0 is a billable, specific ICD-10-CM code for hydrops fetalis due to isoimmunization. It is valid for submission on a claim.
Other codes that can never be billed with P56.0
These codes carry an Excludes1 note pointing at P56.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P56.0 alone.
- D56.0Alpha thalassemia
Risk adjustment
P56.0 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 109 Acquired Hemolytic, Aplastic, and Sideroblastic Anemias1.144 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
How P56.0 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to P56.0.
- Dropsy, dropsical›newborn due to isoimmunization
- Hydrops›fetalis›due to›ABO isoimmunization
- Hydrops›fetalis›due to›isoimmunization(ABO) (Rh)
- Hydrops›fetalis›due to›Rh incompatibility
- Hydrops›newborn›due to›ABO isoimmunization
- Hydrops›newborn›due to›isoimmunization(ABO) (Rh)
- Hydrops›newborn›due to›Rh incompatibility
- Isoimmunization NEC›newborn›with›hydrops fetalis
Related codes at this level
Codes that share P56. If P56.0 is not quite right, the correct code is usually one of these.
Questions about P56.0
- Is P56.0 a billable ICD-10-CM code?
- Yes. P56.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does P56.0 sit in the tabular list?
- Certain conditions originating in the perinatal period (P00-P96), in the block Hemorrhagic and hematological disorders of newborn (P50-P61).