I25.6 Silent myocardial ischemia

Billable ICD-10-CM code, FY2026.

Applies from I25 Chronic ischemic heart disease

Excludes2 (not included here)

• non-ischemic myocardial injury (I5A)

Use additional code

• 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)

Risk adjustment (HCC)

• RxHCC V08: HCC 188 — Coronary Artery Disease

MS-DRG index

Defines the logic of DRG(s) 302-303 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 414.8 Other specified forms of chronic ischemic heart disease (approximate)

Code annotations containing back-references to I25.6

Back-references to I25

• Type 2 Excludes: I74 Arterial embolism and thrombosis ("coronary embolism and thrombosis (I21-I25)")
• Type 2 Excludes: I82 Other venous embolism and thrombosis ("coronary (I21-I25)")

Diagnosis Index entries for I25.6

• Disease, diseased › heart (organic) › ischemic (chronic or with a stated duration of over 4 weeks) › diagnosed on ECG or other special investigation, but currently presenting no symptoms
• Disease, diseased › heart (organic) › ischemic (chronic or with a stated duration of over 4 weeks) › silent
• Ischemia, ischemic › myocardium, myocardial (chronic or with a stated duration of over 4 weeks) › silent (asymptomatic)

Nearby codes

• I25.3 Aneurysm of heart
• I25.4 Coronary artery aneurysm and dissection
• I25.41 Coronary artery aneurysm
• I25.42 Coronary artery dissection
• I25.5 Ischemic cardiomyopathy
• I25.6 Silent myocardial ischemia (this code)
• I25.7 Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
• I25.70 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris
• I25.700 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
• I25.701 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
• I25.702 Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris