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R00 ICD-10-CM Code: Abnormalities of heart beat

R00 isn’t billable on its own. Choose one of the 5 billable codes beneath it, the one the documentation supports.

Official description

R00

Abnormalities of heart beat

ICD-10-CM diagnosis code · United States clinical modification

Billable codes under R00

R00 can’t be reported on its own. Choose the code below that matches what the note documents.

Where R00 sits

  1. 1

    Chapter 18

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

  2. 2

    Section

    Symptoms and signs involving the circulatory and respiratory systems (R00-R09)

  3. 3

    Category R00

    Abnormalities of heart beat

  4. 4

    Code R00

    Abnormalities of heart beat

Notes for this code

Inclusion terms

No inclusion terms are listed for R00.

Code first

No “code first” instruction is listed for R00.

Use additional code

No “use additional code” instruction is listed for R00.

Excludes1

Conditions that should not be reported together with this code.

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

Excludes2

Conditions not included here that may be reported separately when present.

  • specified arrhythmias (I47-I49)

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code R00 mean?

R00 is the FY 2027 U.S. ICD-10-CM code for “Abnormalities of heart beat.”

Is R00 a billable or specific ICD-10-CM code?

No. R00 has 5 billable codes beneath it in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is R00 located in ICD-10-CM?

R00 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Symptoms and signs involving the circulatory and respiratory systems (R00-R09) (R00–R09), under category R00, Abnormalities of heart beat.

What coding notes are listed for R00?

No inclusion terms are listed for R00 in this reference record. No code-first instruction is listed. Excludes1 notes: abnormalities originating in the perinatal period (P29.1-). Excludes2 notes: specified arrhythmias (I47-I49).