R00.9 Unspecified abnormalities of heart beat

Billable ICD-10-CM code, FY2026.

Applies from R00 Abnormalities of heart beat

Excludes1 (never code together)

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

Excludes2 (not included here)

• specified arrhythmias (I47-I49)

MS-DRG index

Defines the logic of DRG(s) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 785.3 Other abnormal heart sounds (approximate)

Diagnosis Index entries for R00.9

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

Nearby codes

• R00 Abnormalities of heart beat
• R00.0 Tachycardia, unspecified
• R00.1 Bradycardia, unspecified
• R00.2 Palpitations
• R00.8 Other abnormalities of heart beat
• R00.9 Unspecified abnormalities of heart beat (this code)