Not Valid for Submission
I20 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of angina pectoris. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.
Specific Coding for Angina pectoris
Non-specific codes like I20 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for angina pectoris:
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code I20:
Use Additional CodeUse Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code to identify:
- 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
Type 1 ExcludesType 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- ANGINA PECTORIS-. the symptom of paroxysmal pain consequent to myocardial ischemia usually of distinctive character location and radiation. it is thought to be provoked by a transient stressful situation during which the oxygen requirements of the myocardium exceed that supplied by the coronary circulation.
- ANGINA PECTORIS VARIANT-. a clinical syndrome characterized by the development of chest pain at rest with concomitant transient st segment elevation in the electrocardiogram but with preserved exercise capacity.
- ANGINA UNSTABLE-. precordial pain at rest which may precede a myocardial infarction.
- MICROVASCULAR ANGINA-. angina pectoris or angina like chest pain with a normal coronary arteriogram and positive exercise test. the cause of the syndrome is unknown. while its recognition is of clinical importance its prognosis is excellent. braunwald heart disease 4th ed p1346; jablonski dictionary of syndromes & eponymic diseases 2d ed. it is different from metabolic syndrome x a syndrome characterized by insulin resistance and hyperinsulinemia that has increased risk for cardiovascular disease.
- ANGINA STABLE-. persistent and reproducible chest discomfort usually precipitated by a physical exertion that dissipates upon cessation of such an activity. the symptoms are manifestations of myocardial ischemia.
Information for Patients
Angina is chest pain or discomfort you feel when there is not enough blood flow to your heart muscle. Your heart muscle needs the oxygen that the blood carries. Angina may feel like pressure or a squeezing pain in your chest. It may feel like indigestion. You may also feel pain in your shoulders, arms, neck, jaw, or back.
Angina is a symptom of coronary artery disease (CAD), the most common heart disease. CAD happens when a sticky substance called plaque builds up in the arteries that supply blood to the heart, reducing blood flow.
There are three types of angina:
- Stable angina is the most common type. It happens when the heart is working harder than usual. Stable angina has a regular pattern. Rest and medicines usually help.
- Unstable angina is the most dangerous. It does not follow a pattern and can happen without physical exertion. It does not go away with rest or medicine. It is a sign that you could have a heart attack soon.
- Variant angina is rare. It happens when you are resting. Medicines can help.
Not all chest pain or discomfort is angina. If you have chest pain, you should see your health care provider.
NIH: National Heart, Lung, and Blood Institute
- Angina - discharge (Medical Encyclopedia)
- Angina - when you have chest pain (Medical Encyclopedia)
- Coronary angiography (Medical Encyclopedia)
- Electrocardiogram (Medical Encyclopedia)
- Living with heart disease and angina (Medical Encyclopedia)
- Stable angina (Medical Encyclopedia)
- Unstable angina (Medical Encyclopedia)
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