1. R00 Abnormalities of heart beat


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


    • specified arrhythmias (I47-I49)
    1. R00.0 Tachycardia, unspecified

      Inclusion term(s):

      • Rapid heart beat
      • Sinoauricular tachycardia NOS
      • Sinus [sinusal] tachycardia NOS
    2. R00.1 Bradycardia, unspecified

      Inclusion term(s):

      • Sinoatrial bradycardia
      • Sinus bradycardia
      • Slow heart beat
      • Vagal bradycardia
    3. R00.2 Palpitations

      Inclusion term(s):

      • Awareness of heart beat
    4. R00.8 Other abnormalities of heart beat

    5. R00.9 Unspecified abnormalities of heart beat

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.