Wiki NSTEMI myocardial infarction (old vs history of) when coding CAD

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Code: I25.2

Code Name: ICD-10 Code for Old myocardial infarction

Block: Ischemic heart diseases (I20-I25)

Details: Old myocardial infarction
Healed myocardial infarction
Past myocardial infarction diagnosed by ECG or other investigation, but currently presenting no symptoms

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)

Guidelines: Diseases of the circulatory system (I00-I99)

Excludes 2: certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
transient cerebral ischemic attacks and related syndromes (G45.-)

For more details on I25.2, ICD-10 Code for Old myocardial infarction , visit:
Best answers
I am auditing a record that documentation stated " CAD with history of NSTEMI Myocardial infarction" but no other code besides I25.10 was used. I think I would need to add I25.2 for old myocardial infarction to the I25.10 diagnosis, but I am not sure since the documentation states this is a history code. Also, there is a code for NSTEMI myocardial infarction I21.4, but to me this suggests a current MI, not something specified as history.

As far as I could tell, there are no history of codes for Mycardial Infarction in ICD-10. Please assist as the coding guidelines don't outline if these codes need to be added to each other somehow.



Local Chapter Officer
Lowell, OH
Best answers
You would use the I25.10 for the CAD and the I25.2 for the old MI. The 'old' MI is the history of. I21.4 is for a current MI, unspecified location.