ICD-9-CM diagnosis code (retired)
413.1 — Prinzmetal angina
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 413.1
413.1 is an ICD-9-CM diagnosis code for Prinzmetal angina. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, I20.1 (Angina pectoris with documented spasm). The match is exact.
ICD-10-CM equivalents
- I20.1Angina pectoris with documented spasmexact match
Common questions about 413.1
What is the ICD-10 code for ICD-9 413.1?
- The GEMs map 413.1 to ICD-10-CM I20.1.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.