R71 is the ICD-10 code for Abnormality of red blood cells. It is a three-character category that is not subdivided further. It belongs to the block R70–R79 (Abnormal findings on examination of blood, without diagnosis) in Chapter XVIII, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
- Code type
- Category (3 characters)
- Chapter
- XVIII · R00–R99
- Classification
- WHO ICD-10, 2019 version
What R71 includes
Conditions and terms that are coded here.
- Abnormal red-cell:
- morphology NOS
- volume NOS
- Anisocytosis
- Poikilocytosis
What R71 excludes
Conditions that look similar but belong under another code.
R71 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
R71Unormalt forhold ved røde blodceller
DR71Abnorme røde blodlegemer
- DR719Erythrocytabnormitet
R71Punasolujen poikkeavuus
R71Veränderung der Erythrozyten
R71Anomalies des globules rouges
R71afwijking van rode bloedcellen
Listed through more specific codes:
- R71.0Precipitous drop in hematocrit
- R71.8Other abnormality of red blood cells
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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