ICD-10 Code I20.89 – Other forms of angina pectoris (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I20.89 – Other forms of angina pectoris
What it is
I20.89 identifies angina pectoris that does not fit the more specific ICD-10 categories for stable, unstable, or variant angina. Use it for documented angina with a type that is otherwise specified or not clearly classified.
Clinical signs
Clinical features vary; refer to documentation. Angina is typically described as chest discomfort or pressure related to myocardial ischemia, often with exertion or stress, and may include radiation to the arm, neck, or jaw.
When to use this code
Use I20.89 when the provider documents angina pectoris but does not specify a more exact subtype. It is appropriate when the record states an atypical, other, or unspecified form that is still clearly angina. Check documentation if the note suggests coronary disease without confirmed angina.
Do not use for
Do not use this code for stable, unstable, or Prinzmetal/vasospastic angina when a more specific code is documented. Do not assign it for chest pain alone without a diagnosis of angina pectoris.
Coding tip
Code the most specific angina type documented; if the subtype is unclear, query the provider before defaulting to I20.89.