R71.8 Other abnormality of red blood cells

Billable ICD-10-CM code, FY2026.

Applicable to

• Abnormal red-cell morphology NOS
• Abnormal red-cell volume NOS
• Anisocytosis
• Poikilocytosis

Applies from R71 Abnormality of red blood cells

Excludes1 (never code 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)

MS-DRG index

Defines the logic of DRG(s) 811-812 in MDC 16.

Approximate ICD-9-CM (GEMs)

• 790.09 Other abnormality of red blood cells

Diagnosis Index entries for R71.8

• Abnormal, abnormality, abnormalities › red blood cell (s) (morphology) (volume)
• Anisocytosis
• Findings, abnormal, inconclusive, without diagnosis › anisocytosis
• Findings, abnormal, inconclusive, without diagnosis › poikilocytosis
• Findings, abnormal, inconclusive, without diagnosis › red blood cell (count) (morphology) (sickling) (volume)
• Poikilocytosis

Nearby codes

• R71 Abnormality of red blood cells
• R71.0 Precipitous drop in hematocrit
• R71.8 Other abnormality of red blood cells (this code)