2025 ICD-10-CM Diagnosis Code I25.721

Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm

  • I25.721 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Athscl autologous artery CABG w ang pctrs w documented spasm
  • The 2025 edition of ICD-10-CM I25.721 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I25.721 – other international versions of ICD-10 I25.721 may differ.

ICD-10-CM Coding Rules

  • I25.721 is applicable to adult patients aged 15 – 124 years inclusive.

Type 1 Excludes

  • angina pectoris with documented spasm without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.1)

The following code(s) above I25.721 contain annotation back-references

 that may be applicable to I25.721:

  • I00-I99  Diseases of the circulatory system
  • I20-I25  Ischemic heart diseases
  • I25  Chronic ischemic heart disease
  • I25.7  Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
  • I25.72  Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris

ICD-10-CM I25.721 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 302 Atherosclerosis with mcc
  • 303 Atherosclerosis without mcc

Convert I25.721 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 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
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I25.721:

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