Acute myocardial infarction, unspecified
We examine Medicare costs and survival gains for Acute Myocardial Infarction (AMI) during 1986–2002. Like Cutler and McClellan, we find overall gains in post-AMI survival more than justified the increases in costs during this period. Since 1996, ...
ICD-10 code I25. 2 for Old myocardial infarction is a medical classification as listed by WHO under the range - Diseases of the circulatory system .
To report AMI, refer to the following code categories: o Subsequent Myocardial Infarction: Acute myocardial infarction occurring within four weeks (28 days) of a previous acute myocardial infarction, regardless of site. o Old Myocardial Infarction: Reported for any myocardial infarction described as older than four ...
First, in order to have a subsequent MI, there must first be an acute MI that has occurred in the preceding 28 days (not 30 days). Second, codes from category I22 should ONLY be applied if both the initial and subsequent MIs are type 1 MIs (coronary involvement, NSTEMI/STEMI) or unspecified.
Use Z codes to code for surgical aftercare. Z codes also apply to post-op care when the condition that precipitated the surgery no longer exists—but the patient still requires therapeutic care to return to a healthy level of function. In situations like these, ICD-10 provides a few coding options, including: Z47.
What is a “subsequent” myocardial infarction? An Inclusion note in the Tabular, category I22 Subsequent ST elevation (STEMI) and non-STE explains that it is an “acute myocardial infarction occurring within four weeks (28 days) of a previous acute myocardial infarction, regardless of site.”
I25. 2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Inferior wall myocardial infarction (MI) occurs from a coronary artery occlusion with resultant decreased perfusion to that region of the myocardium. Unless there is timely treatment, this results in myocardial ischemia followed by infarction.
For example, Z12. 31 (Encounter for screening mammogram for malignant neoplasm of breast) is the correct code to use when you are ordering a routine mammogram for a patient. However, coders are coming across many routine mammogram orders that use Z12.
Myocardial infarction: A heart attack. Abbreviated MI. The term "myocardial infarction" focuses on the myocardium (the heart muscle) and the changes that occur in it due to the sudden deprivation of circulating blood. The main change is necrosis (death) of myocardial tissue.
Aftercare codes are found in categories Z42-Z49 and Z51. Aftercare is one of the 16 types of Z-codes covered in the 2012 ICD-10-CM Official Guidelines and Reporting.
Z aftercare codes are used in office follow-up situations in which the initial treatment of a disease is complete and the patient requires continued care during the healing or recovery phase or for long-term consequences of the disease.
Follow-up. The difference between aftercare and follow-up is the type of care the physician renders. Aftercare implies the physician is providing related treatment for the patient after a surgery or procedure. Follow-up, on the other hand, is surveillance of the patient to make sure all is going well.
The patient is admitted to the hospital on June 1 and is diagnosed with acute myocardial infarction, unspecified ( ICD-10 code I21.9). On July 7, the provider sees the patient for a follow-up visit and the patient receives care related to the myocardial infarction.
An MI is coded as acute for a period of four weeks following onset; after that, it is assigned code I25.2 (old MI). Codes in category I22 are also provided for a subsequent type 1 MI (STEMI or NSTEMI), defined as another MI occurring within four weeks of a previous (initial) MI. In this situation, a code from I21 is also assigned for the initial MI.
Myocardial Infarction has defined six types of MI. The two most commonly encountered are type 1 (primarily due to CAD) and type 2 (primarily due to myocardial supply/demand mismatch). For these two types, MI is defined as myocardial necrosis identified by a rise and/or fall of cardiac biomarkers to or from a level greater than the 99th percentile of the upper reference limit.
Type 1 is the classic spontaneous MI, primarily due to coronary artery disease (CAD) with atherosclerotic plaque rupture, ulceration, fissuring, erosion, or dissection causing intraluminal thrombosis. Occasionally type 1 occurs in the absence of CAD with spontaneous thrombosis of a coronary artery (particularly in women). Type 1 includes Q-wave infarction, ST-elevation MI, and non-ST elevation MI.
Aside from the obvious code changes, a coder needs to be aware of some fundamental differences in guidelines for the coding of myocardial infarctions.
A patient presents with an AMI and during the same hospitalization suffers another AMI. In this case, I21 category would be sequenced first followed by I22. A patient is discharged one week prior after suffering an AMI and now is admitted for a new AMI. For this scenario, the I22 category would be sequenced first followed by the I21 code
When the reason for an encounter is aftercare following a procedure or injury, the 2012 ICD-10-CM Official Guidelines and Reporting should be consulted to ensure that the correct code is assigned. Codes for reporting most types of aftercare are found in Chapter 21. However, aftercare related to injuries is reported with codes from Chapter 19, using seventh-character extensions to identify the service as aftercare.
Aftercare visit codes cover situations occurring when the initial treatment of a disease has been performed and the patient requires continued care during the healing or recovery phase, or care for the long-term consequences of the disease.
The codes for factors influencing health and contact with health services represent reasons for encounters. In ICD-10-CM, these codes are located in Chapter 21 and have the initial alpha character of “Z,” so codes in this chapter eventually may be referred to as “Z-codes” (just as the same supplementary codes in ICD-9-CM were referred to as “V-codes”). While code descriptions in Chapter 21, such as aftercare, may appear to denote descriptions of services or procedures, they are not procedure codes. These codes represent the reason for the encounter, service or visit, and the procedure must be reported with the appropriate procedure code.
Codes for encounters for antineoplastic radiation, chemotherapy and immunotherapy (Z51.0, Z51.1-) are assigned if the sole reason for the encounter is antineoplastic therapy – even if the patient still has the neoplastic disease.
It is defined, according to the American College of Cardiology, as myocardial infarction secondary to ischemia due to either increased oxygen demand or decreased supply. Examples given are coronary artery spasm, coronary embolism, anemia, arrhythmias, hypertension or hypotension.
Secondary to an ischemia. Ischemia caused by increased oxygen demand or decreased supply, such as coronary endothelial dysfunction, coronary artery spasm, coronary artery spasm or embolism, tachy- or brady arrhythmias, anemia, respiratory failure, hypotension and hypertension. Type 3. Cardiac death due to MI.