P55.8 — Other hemolytic diseases of newborn
P55.8 is a billable, specific ICD-10-CM code for other hemolytic diseases of newborn. It is valid for submission on a claim.
Other codes that can never be billed with P55.8
These codes carry an Excludes1 note pointing at P55.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P55.8 alone.
Risk adjustment
P55.8 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 P55.8 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 P55.8.
- Disease, diseased›hemolytic›specified type NEC
- Incompatibility›blood NEC›newborn
- Isoimmunization NEC›newborn›specified type NEC
- Disease, diseased›hemolytic›due to or with›incompatibility›blood NEC(group) (Duffy) (K) (Kell) (Kidd) (Lewis) (M) (S)
- Jaundice›newborn›due to or associated with›hemolytic disease›specified NEC
Code history
P55.8 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share P55. If P55.8 is not quite right, the correct code is usually one of these.
Questions about P55.8
- Is P55.8 a billable ICD-10-CM code?
- Yes. P55.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does P55.8 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).