A code from category I22 must be used in conjunction with a code from category I21. A code from category I22, Subsequent ST elevation (STEMI) and non ST elevation (NSTEMI) myocardial infarction, is to be used when a patient who has suffered an AMI has a new AMI within the 4-week time frame of the initial AMI.

Subsequent acute myocardial infarction is coded from ICD 10 category I22. This is a default ICD 10 code for acute myocardial infarction, unspecified. Read also: ICD 10 coding tips for Hypertensive heart and Kidney diseaseįor unspecified acute myocardial infarction, use ICD 10 code I21.3. Now, for old myocardial infarction which does not require any further care, ICD 10 code I25.2 should be used. After 4 weeks of time if the patient is still receiving the care related to myocardial infarction, then an appropriate ICD 10 code for aftercare should be used, rather than an I21 category code. In such case codes from category I21 can be used. Coding for Acute and Old myocardial infarctionįor encounter of myocardial infraction which is equal to or less than four weeks old, in the acute or post acute setting and the patient is in continuous care for myocardial infarction. For STEMI, subcategories I21.0-I21.2 and code I21.3 are used and NSTEMI and nontransmural MIs, subcategory I21.4 is used. These ICD 10 codes identify the sites for acute myocardial infarction. Acute myocardial infarction is divided into two categories ST elevation myocardial infarction (STEMI) and non ST elevation myocardial infarction (NSTEMI) in ICD 10 coding.

Icd 10 code for nstemi