R71 – Abnormality of red blood cells
ICD-10-CM 2027 diagnosis code · Abnormal findings on examination of blood, without diagnosis
ICD-10-CM code
R71
- Code
R71(claims format:R71)- Description
- Abnormality of red blood cells
- Billable
- No – use a more specific code below
- 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
Billable codes under R71
R71 is a header code and cannot be used on claims. Choose the most specific code:
Notes for R71
Excludes1 (not coded here):
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
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)
Frequently asked questions
What is ICD-10 code R71?
R71 is the ICD-10-CM code for abnormality of red blood cells, in the block R70-R79 (Abnormal findings on examination of blood, without diagnosis).
Is R71 a billable code?
No. R71 is a header code with more specific child codes; report one of the billable codes listed above.
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.