I25.9

Chronic ischemic heart disease, unspecified

Billable / specific

I25.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Ischemic heart disease (chronic) NOS

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from I25)
  • certain infectious and parasitic diseases (A00-B99) (from I25)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from I25)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from I25)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from I25)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from I25)
  • neoplasms (C00-D49) (from I25)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from I25)
  • systemic connective tissue disorders (M30-M36) (from I25)
  • transient cerebral ischemic attacks and related syndromes (G45.-) (from I25)
  • non-ischemic myocardial injury (I5A) (from I25)

Use additional code

Add a code to identify the following, if applicable.

  • code to identify: (from I25)
  • chronic total occlusion of coronary artery (I25.82) (from I25)
  • exposure to environmental tobacco smoke (Z77.22) (from I25)
  • history of tobacco dependence (Z87.891) (from I25)
  • occupational exposure to environmental tobacco smoke (Z57.31) (from I25)
  • tobacco dependence (F17.-) (from I25)
  • tobacco use (Z72.0) (from I25)

Code also

An additional code may be needed.

  • the presence of hypertension (I10-I1A) (from I25)

Also known as

  • Ischemic heart disease (chronic) NOS
  • Deformity, arteryNOS, coronary
  • Deformity, coronary artery
  • Disease, diseased, heart, ischemic
  • Ischemia, ischemic, heart
  • Ischemia, ischemic, myocardium, myocardial
  • Ischemia, ischemic, supply

Parent code

  • I25Chronic ischemic heart diseaseHeader

Related codes

  • I25.1Atherosclerotic heart disease of native coronary arteryHeader
  • I25.2Old myocardial infarctionBillable
  • I25.3Aneurysm of heartBillable
  • I25.4Coronary artery aneurysm and dissectionHeader
  • I25.5Ischemic cardiomyopathyBillable
  • I25.6Silent myocardial ischemiaBillable
  • I25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectorisHeader
  • I25.8Other forms of chronic ischemic heart diseaseHeader

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