R00.9 – Unspecified abnormalities of heart beat

ICD-10-CM 2027 diagnosis code · Symptoms and signs involving the circulatory and respiratory systems

Billable code

ICD-10-CM code R00.9

Code: R00.9 (claims format: R009)
Description: Unspecified abnormalities of heart beat
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: R00-R09 Symptoms and signs involving the circulatory and respiratory systems
Parent codes: R00

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

R00 – Abnormalities of heart beat

Excludes1 (not coded here):

abnormalities originating in the perinatal period (P29.1-)

Excludes2 (not included here):

specified arrhythmias (I47-I49)

Index terms for R00.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in R00

R00.0 – Tachycardia, unspecifiedBillable
R00.1 – Bradycardia, unspecifiedBillable
R00.2 – PalpitationsBillable
R00.8 – Other abnormalities of heart beatBillable

Frequently asked questions

What is ICD-10 code R00.9?

R00.9 is the ICD-10-CM code for unspecified abnormalities of heart beat, in the block R00-R09 (Symptoms and signs involving the circulatory and respiratory systems).

Is R00.9 a billable code?

Yes. R00.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R00.9 belong to?

It belongs to category R00 – Abnormalities of heart beat.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.