ICD-10 R00.1
Billable / SpecificBradycardia, unspecified
About ICD-10-CM R00.1
ICD-10-CM code R00.1 represents Bradycardia, unspecified. This is a billable/specific code in the Symptoms, Signs, and Abnormal Findings chapter (block R00). The 2026 edition of ICD-10-CM R00.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under R00.1. Per CMS ICD-10-CM Tabular 2026.
- Sinoatrial bradycardia
- Sinus bradycardia
- Slow heart beat
- Vagal bradycardia
Type 1 Excludes
Pure excludes, these codes can never be coded together with R00.1. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- neonatal bradycardia (P29.12)
Use Additional Code
When coding R00.1, also report these additional codes when applicable.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Medicare LCD Coverage for R00.1
Local Coverage Determinations (LCDs) from CMS MACs that list R00.1 as a covered diagnosis.
Showing top 10 of 312 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing R00.1.
4 Aetna
1 Cigna
5 Medicare
CPT Codes Commonly Billed with R00.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 93015 Stress test — chest pain, palpitations, syncope, known CAD Cardiovascular Disease
- 93000 EKG 12-lead — tachycardia, bradycardia, palpitations, HTN, CAD, AFib, arrhythmia, chest pain, syncope, cardiomyopathy, AV block, bundle branch block, SVT, VT, diabetes screening, abnormal EKG Cardiology
- 93010 EKG interpretation only — same dx as 93000 Cardiology
Convert R00.1 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| R00.1 | 42781 | 10000 |
| R00.1 | 42789 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To R00.1
Other codes in section R00-R09 (Symptoms and signs involving the circulatory and respiratory systems).
ICD-10 R00.1, Billing FAQ
Is ICD-10 code R00.1 billable? +
Yes, R00.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to R00.1? +
ICD-10 R00.1 includes: Sinoatrial bradycardia; Sinus bradycardia; Slow heart beat, and 1 more clinical synonyms.
What codes are Type 1 Excludes for R00.1? +
Type 1 Excludes (never code together with R00.1): neonatal bradycardia (P29.12)
What CPT codes are commonly billed with R00.1? +
Procedures frequently paired with R00.1 include: 93015, 93000, 93010.
What ICD-9 codes does R00.1 map to? +
Per CMS GEMs, R00.1 maps to ICD-9 codes: 42781, 42789. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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