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ICD-10-CM Code for Acute myocardial infarction, unspecified I21.9

ICD-10 code I21.9 for Acute myocardial infarction, unspecified is a medical classification as listed by WHO under the range - Diseases of the circulatory system .

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Official Long Descriptor

Acute myocardial infarction, unspecified
Myocardial infarction (acute) NOS

I21

Includes: cardiac infarction
coronary (artery) embolism
coronary (artery) occlusion
coronary (artery) rupture
coronary (artery) thrombosis
infarction of heart, myocardium, or ventricle
myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset

Excludes2: old myocardial infarction (I25.2)
postmyocardial infarction syndrome (I24.1)
subsequent type 1 myocardial infarction (I22.-)

Use additional code, if applicable, to identify:
exposure to environmental tobacco smoke (Z77.22)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Additional/Related Information

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Get crucial instructions for accurate ICD-10-CM I21.9 coding with all applicable Excludes 1 and Excludes 2 notes from the section level conveniently shown with each code.
This section shows you chapter-specific coding guidelines to increase your understanding and correct usage of the target ICD-10-CM Volume 1 code.

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Have a question about ICD-10-CM Code I21.9 ? Start a discussion here
Need help figuring out what to charge.
[HEADING=1]Procedures[/HEADING] ... [ Read More ]
92941 or 92928
[B]When coding MI's -I've seen where it is said there should be no antegrade flow and others where flow is not mentioned, just that to be able to code 92941-- the patient has to be having the MI. Wh... [ Read More ]
Dx. for HTN with NSTEMI
I22.4 id not a valid dx. I don't believe there is a combination code for this, so I would code the NSTEMI, I21.4 and also the HTN, I10.... [ Read More ]
Correct use of I25.2 for Old MI
Per the ICD-10 guidelines: [I]For encounters after the 4 week time frame and the patient is still receiving care related to the myocardial infarction, the appropriate aftercare code should be assigne... [ Read More ]
Cath, PCI, and more
[TABLE] [TR] [TD][SIZE=3][/SIZE][/TD] [TD][SIZE=3][/SIZE][/TD] [TD][SIZE=3][/SIZE][/TD] [/TR] [TR] [TD][TABLE] [TR] [TD]CAN I GET HELP WITH THE CODING FOR THIS, THANK YOU!! [/TD] [/TR] [/TABLE][/TD]... [ Read More ]
Mycardio Infarction Coding
I recommend reviewing the Chapter 9 guidelines in ICD-10 which address coding of myocardial infarctions in detail in section e. As quoted below, an MI is coded differently depending on how recently i... [ Read More ]
MI codes I21.A1 vs I21.4
on further review, the code also note no longer exists with I21.A1 it is now a codes first note so I went to the coding clinic and it does state that there must be a cause and effect relationship so t... [ Read More ]
MI codes I21.A1 vs I21.4
So we just code it as I21.A1 without the tachycardia bec we cannot code it as paroxysmal tachycardia ? Under the definition in the book, Code also the underlying cause, if known and applicable, such a... [ Read More ]
MI codes I21.A1 vs I21.4
For the MI - a type 2 NSTEMI is secondary to ischemia from a supply and demand mismatch. It is marked by nonST elevation. So you see the term type 2 MI is the same as saying type 2 MI and so they cr... [ Read More ]
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