R00.1 — Bradycardia, unspecified
Is R00.1 billable?
Yes, but R00.1 is an unspecified code. R00.1 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, R00.1 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting R00.1 — the more specific alternatives are listed below.
More specific alternatives
R00.1 at a glance
| Code | R00.1 |
|---|---|
| Description | Bradycardia, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does R00.1 group to?
R00.1 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 308Cardiac Arrhythmia and Conduction Disorders with MCCmedical
- 309Cardiac Arrhythmia and Conduction Disorders with CCmedical
- 310Cardiac Arrhythmia and Conduction Disorders without CC/MCCmedical
How is R00.1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R00.1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Brachycardia
- Bradycardia (sinoatrial) (sinus) (vagal)
- Heart beat › slow
- Sinus › bradycardia
- Slow › heart
- Syncope › bradycardia (near) (pre-)
Excludes1 — never code together
The conditions below can never be reported together with R00.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- neonatal bradycardia (P29.12)
Use additional code
Report an additional code alongside R00.1 to fully describe the condition. R00.1 is sequenced first.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Inclusion terms
Alternative wording in documentation that is classified to R00.1.
- Sinoatrial bradycardia
- Sinus bradycardia
- Slow heart beat
- Vagal bradycardia
Excludes1 — never code together — inherited from R00
The conditions below can never be reported together with R00.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- abnormalities originating in the perinatal period (P29.1-)
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R00.1, but a patient may have both at the same time. When documentation supports it, R00.1 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R00
The conditions below are not part of R00.1, but a patient may have both at the same time. When documentation supports it, R00.1 and the excluded code may both be reported.
- specified arrhythmias (I47-I49)
How long has R00.1 existed?
R00.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.