I20.1 – Angina pectoris with documented spasm

ICD-10-CM 2027 diagnosis code · Ischemic heart diseases

Billable code

ICD-10-CM code I20.1
Code
I20.1 (claims format: I201)
Description
Angina pectoris with documented spasm
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
9. Diseases of the circulatory system (I00-I99)
Block
I20-I25 Ischemic heart diseases
Parent codes
I20

Notes for I20.1

Applicable to:
  • Angiospastic angina
  • Prinzmetal angina
  • Spasm-induced angina
  • Variant angina

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I20 – Angina pectoris

Excludes1 (not coded here):
  • 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)
Use additional code:
  • 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)

Block I20-I25

Code also:
  • the presence of hypertension (I10-I1A)

Index terms for I20.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I20

Frequently asked questions

What is ICD-10 code I20.1?

I20.1 is the ICD-10-CM code for angina pectoris with documented spasm, in the block I20-I25 (Ischemic heart diseases).

Is I20.1 a billable code?

Yes. I20.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I20.1 belong to?

It belongs to category I20 – Angina pectoris.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.