Code alsothe presence of hypertension (I10-I1A)

  1. I20 Angina pectoris

    Use additional code to identify:
    exposure to environmental tobacco smoke (Z77.22)
    history of tobacco dependence (Z87.891)
    occupational exposure to environmental tobacco smoke (Z57.31)
    tobacco dependence (F17.-)
    tobacco use (Z72.0)


    • angina pectoris with atherosclerotic heart disease of native coronary arteries (I25.1-)
    • atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris (I25.7-)
    • postinfarction angina (I23.7)
    1. I20.0 Unstable angina

      Inclusion term(s):

      • Accelerated angina
      • Crescendo angina
      • De novo effort angina
      • Intermediate coronary syndrome
      • Preinfarction syndrome
      • Worsening effort angina
    2. I20.1 Angina pectoris with documented spasm

      Inclusion term(s):

      • Angiospastic angina
      • Prinzmetal angina
      • Spasm-induced angina
      • Variant angina
    3. I20.2 Refractory angina pectoris

    4. I20.8 Other forms of angina pectoris

      1. I20.81 Angina pectoris with coronary microvascular dysfunction

        Inclusion term(s):

        • Angina pectoris with coronary microvascular disease
      2. I20.89 Other forms of angina pectoris

        Inclusion term(s):

        • Angina equivalent
        • Angina of effort
        • Coronary slow flow syndrome
        • Stable angina
        • Stenocardia
    5. I20.9 Angina pectoris, unspecified

      Inclusion term(s):

      • Angina NOS
      • Anginal syndrome
      • Cardiac angina
      • Ischemic chest pain
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.