ICD-10-CM 2027
ICD-10 code for Brachycardia
From the official ICD-10-CM alphabetic index entry “Brachycardia”. Page updated September 29, 2026.
About coding Brachycardia
The ICD-10-CM code for Brachycardia is R00.1 (Bradycardia, unspecified).
Within R00, choose R00.1 (Bradycardia, unspecified) only when documentation doesn't support a more specific option: tachycardia, unspecified (R00.0), Palpitations (R00.2), other abnormalities of heart beat (R00.8) and unspecified abnormalities of heart beat (R00.9).
Don't report R00.1 together with the conditions in its Excludes1 note: neonatal bradycardia (P29.12).
Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
Don't confuse with (Excludes1 for R00.1)
- neonatal bradycardia (P29.12)
Common questions about Brachycardia ICD-10 codes
What is the ICD-10 code for Brachycardia?
- R00.1 — Bradycardia, unspecified.
Is R00.1 billable?
- Yes. R00.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R00.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R00.1 as a principal diagnosis.
Is R00.1 a CC or MCC?
- No. R00.1 is neither a CC nor an MCC under MS-DRG v44.0.