I20.1

Angina pectoris with documented spasm

Billable / specific

I20.1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Angiospastic angina
  • Prinzmetal angina
  • Spasm-induced angina
  • Variant angina

Excludes1

Not coded here — never report together with this code.

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

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from I20)
  • certain infectious and parasitic diseases (A00-B99) (from I20)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from I20)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from I20)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from I20)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from I20)
  • neoplasms (C00-D49) (from I20)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from I20)
  • systemic connective tissue disorders (M30-M36) (from I20)
  • transient cerebral ischemic attacks and related syndromes (G45.-) (from I20)

Use additional code

Add a code to identify the following, if applicable.

  • code to identify: (from I20)
  • exposure to environmental tobacco smoke (Z77.22) (from I20)
  • history of tobacco dependence (Z87.891) (from I20)
  • occupational exposure to environmental tobacco smoke (Z57.31) (from I20)
  • tobacco dependence (F17.-) (from I20)
  • tobacco use (Z72.0) (from I20)

Code also

An additional code may be needed.

  • the presence of hypertension (I10-I1A) (from I20)

Also known as

  • Angiospastic angina
  • Prinzmetal angina
  • Spasm-induced angina
  • Variant angina
  • Angina, with documented spasm
  • Ischemia, ischemic, supply, due to vasospasm
  • Spasm, spastic, spasticity, cardiac
  • Spasm, spastic, spasticity, coronary
  • Spasm, spastic, spasticity, heart
  • Vasospasm, coronary

Parent code

  • I20Angina pectorisHeader

Related codes

  • I20.0Unstable anginaBillable
  • I20.2Refractory angina pectorisBillable
  • I20.8Other forms of angina pectorisHeader
  • I20.9Angina pectoris, unspecifiedBillable

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