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R00.1 — Bradycardia, unspecified
R00.1
What this code means
Bradycardia is a slow heart rate; here the rhythm type is not specified.
Also called: bradycardia, slow heart rate.
When this code is used
Used for bradycardia, unspecified.
Where it sits in ICD-10-CM
Code R00.1 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Related anatomy
Frequently asked questions
What is ICD-10-CM code R00.1?
R00.1 is the ICD-10-CM diagnosis code for “Bradycardia, unspecified”. Bradycardia is a slow heart rate; here the rhythm type is not specified.
When is code R00.1 used?
Used for bradycardia, unspecified. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.