ICD-10-CM 2027
ICD-10 code for bradycardia
From the official ICD-10-CM alphabetic index entry “Bradycardia (sinoatrial) (sinus) (vagal)”. Page updated September 29, 2026.
About coding bradycardia
The ICD-10-CM code for bradycardia is R00.1 (Bradycardia, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R00.1.
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).
More specific bradycardia codes (official index)
Don't confuse with (Excludes1 for R00.1)
- neonatal bradycardia (P29.12)
Common questions about bradycardia ICD-10 codes
What is the ICD-10 code for bradycardia?
- R00.1 — Bradycardia, unspecified. More specific codes apply when the documentation supports them: P29.12, G90.09, I49.5.
What is the ICD-10 code for neonatal bradycardia?
- P29.12 — Neonatal bradycardia.
What is the ICD-10 code for reflex bradycardia?
- G90.09 — Other idiopathic peripheral autonomic neuropathy.
What is the ICD-10 code for tachycardia syndrome bradycardia?
- I49.5 — Sick sinus syndrome.
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.