DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

R00 Abnormalities of heart beat

  • Header · not billable

R00 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

Where it sits

  1. Chapter 18 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
  2. R00-R09 Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
  3. R00 Abnormalities of heart beat
Billable codes
5
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
30

Codes in R00

  1. R00.0
    Tachycardia, unspecified
    Billable
    Inclusion terms 3, Excludes1 3

    Inclusion terms

    • Rapid heart beat
    • Sinoauricular tachycardia NOS
    • Sinus [sinusal] tachycardia NOS

    Excludes1

    • inappropriate sinus tachycardia, so stated (I47.11) I47.11
    • neonatal tachycardia (P29.11) P29.11
    • paroxysmal tachycardia (I47.-) I47
  2. R00.1
    Bradycardia, unspecified
    Billable
    Inclusion terms 4, Excludes1 1, Use additional code 1

    Inclusion terms

    • Sinoatrial bradycardia
    • Sinus bradycardia
    • Slow heart beat
    • Vagal bradycardia

    Excludes1

    • neonatal bradycardia (P29.12) P29.12

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
  3. R00.2
    Palpitations
    Billable
    Inclusion terms 1

    Inclusion terms

    • Awareness of heart beat
  4. R00.8
    Other abnormalities of heart beat
    Billable
  5. R00.9
    Unspecified abnormalities of heart beat
    Billable

Sources of each column.

Instructions

At R00

Excludes1

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

Excludes2

  • specified arrhythmias (I47-I49) I47 I49

Notes that also apply

Chapter 18 instructions (Notes 9, Excludes2 4): printed on the chapter 18 page.

Index entries

  • Fast pulse → R00.0
  • Tachycardia → R00.0
  • Brachycardia → R00.1
  • Bradycardia (sinoatrial) (sinus) (vagal) → R00.1
  • Awareness of heart beat → R00.2
  • Palpitations (heart) → R00.2
  • Bigeminal pulse → R00.8
  • Coupled rhythm → R00.8
  • Gallop rhythm → R00.8
  • Pulsus alternans or trigeminus → R00.8
  • Trigeminy → R00.8
  • Heart beatrapid → R00.0
  • Pulsefast → R00.0
  • Pulserapid → R00.0
  • Rapidheart (beat) → R00.0
  • Sinustachycardia → R00.0
  • Tachycardiasinoauricular NOS → R00.0
  • Tachycardiasinus [sinusal] NOS → R00.0
  • Heart beatslow → R00.1
  • Sinusbradycardia → R00.1
  • Slowheart (beat) → R00.1
  • Syncope (near) (pre-)bradycardia → R00.1
  • Abnormal, abnormality, abnormalitiespulsations in neck → R00.2
  • Heart beatawareness → R00.2
  • Pulsealternating → R00.8
  • Pulsebigeminal → R00.8
  • Heart beatabnormality → R00.9
  • Heart beatabnormalityspecified NEC → R00.8
  • Abnormal, abnormality, abnormalitiesheartrate → R00.9
  • Abnormal, abnormality, abnormalitiesheartratespecified NEC → R00.8

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