P55.0

Rh isoimmunization of newborn

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 10 never code together

Excludes1

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

Excludes2

congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
tetanus neonatorum (A33)A33

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 2

Notes

Codes from this chapter are for use on newborn records only, never on maternal records

Includes

conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later

Index entries leading here 9

Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) D64.9
- newborn P61.4
  - due to
    - Rh (antibodies, isoimmunization, maternal/fetal incompatibility) P55.0
Jaundice (yellow) R17
- newborn P59.9
  - due to or associated with
    - Rh
      - antibodies P55.0
      - isoimmunization P55.0
      - incompatibility, maternal/fetal P55.0
    - hemolytic disease P55.9
      - Rh isoimmunization P55.0
Antibodies, maternal (blood group) — see Isoimmunization, affecting management of pregnancy
- anti-D — see Isoimmunization, affecting management of pregnancy, Rh
  - newborn P55.0
Disease, diseased — see also Syndrome
- hemolytic (newborn) P55.9
  - due to or with
    - incompatibility
      - Rh (blood group) (factor) P55.0
    - Rh negative mother P55.0
Erythroblastosis (fetalis) (newborn) P55.9
- due to
  - Rh (antibodies) (incompatibility) (isoimmunization) P55.0
Icterus — see also Jaundice
- gravis, newborn P55.0
Rh (factor)
- hemolytic disease (newborn) P55.0
- incompatibility, immunization or sensitization
  - newborn P55.0
- negative mother affecting newborn P55.0
Incompatibility
- Rh (blood group) (factor) Z31.82
  - newborn P55.0
Isoimmunization NEC — see also Incompatibility
- newborn P55.9
  - Rhesus (Rh) factor P55.0

Alongside this code 3 same parent — P55

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Present FY2024–FY2027.