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R00

⚠ Non-billable (Header)

Abnormalities of heart beat

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with R00

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

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • specified arrhythmias (I47-I49)

Child Codes (5)

R00.0Tachycardia, unspecifiedR00.1Bradycardia, unspecifiedR00.2PalpitationsR00.8Other abnormalities of heart beatR00.9Unspecified abnormalities of heart beat

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Code Information

CodeR00
BillableNo — Header code
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes11 rule(s)
Excludes21 note(s)
Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)