ICD-10-CM I20.0: Unstable angina

ICD-10-CM Diagnosis Code (2025)

Official Description for I20.0

Unstable angina

Coding Notes & Guidelines for I20.0

Inclusion Terms
  • Accelerated angina
  • Crescendo angina
  • De novo effort angina
  • Intermediate coronary syndrome
  • Preinfarction syndrome
  • Worsening effort angina

Parent Code (Less Specific):

About ICD-10-CM Code I20.0 (Unstable angina)

ICD-10-CM code I20.0 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM I20.0 became effective on October 1, 2024.

This page provides detailed information about I20.0 - Unstable angina. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Unstable angina.