R71.8 – Other abnormality of red blood cells

ICD-10-CM 2027 diagnosis code · Abnormal findings on examination of blood, without diagnosis

Billable code

ICD-10-CM code R71.8

Code: R71.8 (claims format: R718)
Description: Other abnormality of red blood cells
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: R70-R79 Abnormal findings on examination of blood, without diagnosis
Parent codes: R71

Notes for R71.8

Applicable to:

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

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

R71 – Abnormality of red blood cells

Excludes1 (not coded here):

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)

Block R70-R79

Excludes2 (not included here):

abnormal findings on antenatal screening of mother (O28.-)
abnormalities of lipids (E78.-)
abnormalities of platelets and thrombocytes (D69.-)
abnormalities of white blood cells classified elsewhere (D70-D72)
coagulation hemorrhagic disorders (D65-D68)
diagnostic abnormal findings classified elsewhere - see Alphabetical Index
hemorrhagic and hematological disorders of newborn (P50-P61)

Index terms for R71.8

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in R71

R71.0 – Precipitous drop in hematocritBillable

Frequently asked questions

What is ICD-10 code R71.8?

R71.8 is the ICD-10-CM code for other abnormality of red blood cells, in the block R70-R79 (Abnormal findings on examination of blood, without diagnosis).

Is R71.8 a billable code?

Yes. R71.8 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R71.8 belong to?

It belongs to category R71 – Abnormality of red blood cells.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.