R00 is the ICD-10 code for Abnormalities of heart beat. It is a three-character category divided into 5 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block R00–R09 (Symptoms and signs involving the circulatory and respiratory systems) 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 R00 excludes
Conditions that look similar but belong under another code.
Subcodes of R00
R00 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DR00Abnorm hjerterytme
R00Sydämenlyönnin poikkeavuudet
R00Störungen des Herzschlages
R00Anomalies du rythme cardiaque
R00afwijkingen van hartslag
Listed through more specific codes:
- R00.9Unspecified abnormalities of heart beat
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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