I25.8 ICD-10-CM Code: Other forms of chronic ischemic heart disease
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I25.8 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- non-ischemic myocardial injury (I5A) Compare I25.8 vs I5A →
Code Also
Additional codes that may be required to fully describe the encounter.
- the presence of hypertension (I10-I1A)
Use Additional Code
Supplementary codes the tabular list directs you to add.
- Use additional code to identify:
- chronic total occlusion of coronary artery (I25.82)
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Change history
No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.
Verify Before Coding
- Not billable as written — a more specific code is required: I25.810, I25.811, I25.812, I25.82, I25.83.
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.
Contextual Map
Every relationship of I25.8 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Hierarchy
- I25 — Chronic ischemic heart disease [Hierarchy]
Nearest codes (40)
- I25 — Chronic ischemic heart disease [Sibling]
- I25.72 — Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris [Sibling]
- I25.720 — Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris [Sibling]
- I25.721 — Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm [Sibling]
- I25.722 — Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris [Sibling]
- I25.728 — Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris [Sibling]
- I25.729 — Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris [Sibling]
- I25.73 — Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris [Sibling]
- and 32 more
Frequently Asked Questions (FAQ) & Clinical Guidance
Can I25.8 be billed directly?
No. I25.8 (Other forms of chronic ischemic heart disease) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to I25.8 in its code family, with their registry titles.
- I25.790 — Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
- I25.791 — Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.792 — Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
- I25.798 — Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
- I25.799 — Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
- I25.81 — Atherosclerosis of other coronary vessels without angina pectoris
- I25.810 — Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
- I25.811 — Atherosclerosis of native coronary artery of transplanted heart without angina pectoris
- I25.812 — Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris
- I25.82 — Chronic total occlusion of coronary artery