Specific code icon 2017 ICD-10-CM Diagnosis Code I20.1

Angina pectoris with documented spasm

    2016 2017 Billable/Specific Code

  • I20.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • This is the American ICD-10-CM version of I20.1. Other international versions of ICD-10 I20.1 may differ.
  • Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Information
  • (syn. Prinzmetal's angina or coronary artery vasospasm). It usually occurs spontaneously, and unlike typical angina, it nearly always occurs when a person is at rest and does not require physical exertion. It frequently is associated with transient st-segment elevation. (nih roadmap cardiovascular data standards working group)
  • A clinical syndrome characterized by the development of chest pain at rest with concomitant transient st segment elevation in the electrocardiogram, but with preserved exercise capacity.
  • A variant form of angina pectoris caused by coronary artery vasospasm, usually occurring spontaneously and frequently associated with st segment elevation.
Applicable To
  • Angiospastic angina
  • Prinzmetal angina
  • Spasm-induced angina
  • Variant angina
Approximate Synonyms
  • Angina, Prinzmetal
ICD-10-CM I20.1 is grouped within Diagnostic Related Group (MS-DRG v34.0):
  • 311 Angina pectoris

Convert ICD-10-CM I20.1 to ICD-9-CM

The following ICD-10-CM Index entries contain back-references to ICD-10-CM I20.1: