20162017201820192020202120222023Billable/Specific Code
- I20.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM I20.1 became effective on October 1, 2022.
- This is the American ICD-10-CM version of I20.1 – other international versions of ICD-10 I20.1 may differ.
ICD-10-CM I20.1 is grouped within Diagnostic Related Group(s):
- 311 Angina pectoris
Applicable To
- Angiospastic angina
- Prinzmetal angina
- Spasm-induced angina
- Variant angina
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to I20.1:
- documented spasm > with
- due to vasospasm > supply (coronary) I25.9
- cardiac > Spasm, spastic, spasticity (s) R25.2
- coronary (artery) > Spasm, spastic, spasticity (s) R25.2
- heart > Spasm, spastic, spasticity (s) R25.2
- coronary > Vasospasm (vasoconstriction) I73.9
