MCMedicalCodingSoftware
R00.9

R00.9: Unspecified abnormalities of heart beat

Billable / specific codeICD-10-CM

R00.9 is a billable, specific ICD-10-CM code for unspecified abnormalities of heart beat. It is valid for submission on a claim.

Check R00.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above R00.9

A category’s note binds every code beneath it.

Written on R00: Abnormalities of heart beat

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

Excludes2 inherited from the categories above R00.9

Not part of this code, but both may be coded when both are present.

Written on R00: Abnormalities of heart beat

  • specified arrhythmias (I47-I49)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

R00.9 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56625Billing and Coding: Echocardiography
  • A56781Billing and Coding: Transthoracic Echocardiography (TTE)

Alphabetic index entries that lead here

  • Heart beat›abnormality
  • Abnormal, abnormality, abnormalities›heart›rate

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under R00

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.