Specific code 2007 ICD-9-CM Diagnosis Code 411.1
Intermediate coronary syndrome
  • Short description: INTERMED CORONARY SYND.
  • ICD-9-CM 411.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 411.1 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2007 version of ICD-9-CM 411.1.
  • More recent version(s) of ICD-9-CM 411.1: 2008 2009 2010 2011 2012 2013 2014 2015.
Convert to ICD-10-CM: 411.1 converts approximately to:
  • 2015/16 ICD-10-CM I20.0 Unstable angina
Approximate Synonyms
  • Acute coronary syndrome
  • Angina, unstable
  • Preinfarction syndrome
  • Unstable angina
411.1 Excludes
Applies To
  • Impending infarction
  • Preinfarction angina
  • Preinfarction syndrome
  • Unstable angina
ICD-9-CM Volume 2 Index entries containing back-references to 411.1:
  • Angina (attack) (cardiac) (chest) (effort) (heart) (pectoris) (syndrome) (vasomotor) 413.9
    • accelerated 411.1
    • crescendo 411.1
    • initial 411.1
    • preinfarctional 411.1
    • progressive 411.1
    • unstable 411.1
  • Impending
    • coronary syndrome 411.1
    • myocardial infarction 411.1
  • Infarct, infarction
    • impending (myocardium) 411.1
    • myocardium, myocardial (acute or with a stated duration of 8 weeks or less) (with hypertension) 410.9
      • with symptoms after 8 weeks from date of infarction 414.8
      • anterior (wall) (with contiguous portion of intraventricular septum) NEC 410.1
      • anteroapical (with contiguous portion of intraventricular septum) 410.1
      • anterolateral (wall) 410.0
      • anteroseptal (with contiguous portion of intraventricular septum) 410.1
      • apical-lateral 410.5
      • atrial 410.8
      • basal-lateral 410.5
      • chronic (with symptoms after 8 weeks from date of infarction) 414.8
      • diagnosed on ECG, but presenting no symptoms 412
      • diaphragmatic wall (with contiguous portion of intraventricular septum) 410.4
      • healed or old, currently presenting no symptoms 412
      • high lateral 410.5
      • impending 411.1
      • inferior (wall) (with contiguous portion of intraventricular septum) 410.4
      • inferolateral (wall) 410.2
      • inferoposterior wall 410.3
      • lateral wall 410.5
      • non-ST elevation (NSTEMI) 410.7
      • nontransmural 410.7
      • papillary muscle 410.8
      • past (diagnosed on ECG or other special investigation, but currently presenting no symptoms) 412
      • posterior (strictly) (true) (wall) 410.6
      • posterobasal 410.6
      • posteroinferior 410.3
      • posterolateral 410.5
      • previous, currently presenting no symptoms 412
      • septal 410.8
      • specified site NEC 410.8
      • ST elevation (STEMI) 410.9
        • anterior (wall) 410.1
        • anterolateral (wall) 410.0
        • inferior (wall) 410.4
        • inferolateral (wall) 410.2
        • inferoposterior wall 410.3
        • lateral wall 410.5
        • posterior (strictly) (true) (wall) 410.6
        • specified site NEC 410.8
      • subendocardial 410.7
      • syphilitic 093.82
  • Syndrome - see also Disease
    • acute coronary 411.1
    • coronary insufficiency or intermediate 411.1
    • impending coronary 411.1
    • intermediate coronary (artery) 411.1
    • preinfarction 411.1
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 411.1 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2007 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.