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ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

I21.9 – Acute myocardial infarction, unspecified

Overview

Coding Notes

Active
Billable, valid for HIPAA-covered transactions

Applicable To

Myocardial infarction (acute) NOS

GEM Conversion to ICD-9 CM

Fs: 10000 – Acute myocardial infarction of unspecified site, episode of care unspecified
Fs: 10000 – Acute myocardial infarction of unspecified site, initial episode of care
Fs: 10000 – Acute myocardial infarction of unspecified site, subsequent episode of care

MDC / MS-DRG Reference

CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITH AMI, HF OR SHOCK WITH MCC
CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITH AMI, HF OR SHOCK WITHOUT MCC
CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITHOUT AMI, HF OR SHOCK WITH MCC
CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITHOUT AMI, HF OR SHOCK WITHOUT MCC
CARDIAC DEFIBRILLATOR IMPLANT WITHOUT CARDIAC CATHETERIZATION WITH MCC
CARDIAC DEFIBRILLATOR IMPLANT WITHOUT CARDIAC CATHETERIZATION WITHOUT MCC
ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITH MCC
ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITH CC
ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITHOUT CC/MCC
ACUTE MYOCARDIAL INFARCTION, EXPIRED WITH MCC
ACUTE MYOCARDIAL INFARCTION, EXPIRED WITH CC
ACUTE MYOCARDIAL INFARCTION, EXPIRED WITHOUT CC/MCC

Back Reference of Diagnostic Codes

Infarct, infarction
myocardium, myocardial (acute) (with stated duration of 4 weeks or less) I21.9
transmural I21.9
type 1 See also Infarction, myocardial, by site, or by ST elevation or non-ST elevation I21.9

Sibling Codes

ST elevation (STEMI) myocardial infarction of anterior wall
ST elevation (STEMI) myocardial infarction of inferior wall
ST elevation (STEMI) myocardial infarction of other sites
ST elevation (STEMI) myocardial infarction of unspecified site
Non-ST elevation (NSTEMI) myocardial infarction
Other type of myocardial infarction

Parent Sibling Codes

Angina pectoris
Acute myocardial infarction
Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)
Other acute ischemic heart diseases
Chronic ischemic heart disease
Pulmonary embolism
Other pulmonary heart diseases
Other diseases of pulmonary vessels

View in Tabular

Code Title
I00-I99 Diseases of the circulatory system (I00-I99)
I20-I25 Ischemic heart diseases (I20-I25)
I21 Acute myocardial infarction
I21.9 Acute myocardial infarction, unspecified
Applicable to
Myocardial infarction (acute) NOS