ICD-10-CM · Chapter 18 · R00-R99
R71 Abnormality of red blood cells
Excludes 1 (cannot be coded together)
- anemias (D50-D64)
- anemia of premature infant (P61.2)
- benign (familial) polycythemia (D75.0)
- congenital anemias (P61.2-P61.4)
- newborn anemia due to isoimmunization (P55.-)
- polycythemia neonatorum (P61.1)
- polycythemia NOS (D75.1)
- polycythemia vera (D45)
- secondary polycythemia (D75.1)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| R71..0 | Precipitous drop in hematocrit | Yes |
| R71..8 | Other abnormality of red blood cells | Yes |
Last reviewed: September 2026