2021 ICD-10-CM Code J45

Asthma

Version 2021

Not Valid for Submission

J45 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of asthma. 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.

ICD-10:J45
Short Description:Asthma
Long Description:Asthma

Code Classification

Specific Coding for Asthma

Non-specific codes like J45 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 asthma:

  • NON-BILLABLE CODE - J45.2 for Mild intermittent asthma
  • BILLABLE CODE - Use J45.20 for Mild intermittent asthma, uncomplicated
  • BILLABLE CODE - Use J45.21 for Mild intermittent asthma with (acute) exacerbation
  • BILLABLE CODE - Use J45.22 for Mild intermittent asthma with status asthmaticus
  • NON-BILLABLE CODE - J45.3 for Mild persistent asthma
  • BILLABLE CODE - Use J45.30 for Mild persistent asthma, uncomplicated
  • BILLABLE CODE - Use J45.31 for Mild persistent asthma with (acute) exacerbation
  • BILLABLE CODE - Use J45.32 for Mild persistent asthma with status asthmaticus
  • NON-BILLABLE CODE - J45.4 for Moderate persistent asthma
  • BILLABLE CODE - Use J45.40 for Moderate persistent asthma, uncomplicated
  • BILLABLE CODE - Use J45.41 for Moderate persistent asthma with (acute) exacerbation
  • BILLABLE CODE - Use J45.42 for Moderate persistent asthma with status asthmaticus
  • NON-BILLABLE CODE - J45.5 for Severe persistent asthma
  • BILLABLE CODE - Use J45.50 for Severe persistent asthma, uncomplicated
  • BILLABLE CODE - Use J45.51 for Severe persistent asthma with (acute) exacerbation
  • BILLABLE CODE - Use J45.52 for Severe persistent asthma with status asthmaticus
  • NON-BILLABLE CODE - J45.9 for Other and unspecified asthma
  • NON-BILLABLE CODE - J45.90 for Unspecified asthma
  • NON-BILLABLE CODE - J45.99 for Other asthma

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 J45:


Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Use Additional Code

Use 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.

Type 1 Excludes

Type 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.

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

Clinical Information

Information for Patients


Asthma

Asthma is a chronic disease that affects your airways. Your airways are tubes that carry air in and out of your lungs. If you have asthma, the inside walls of your airways become sore and swollen. That makes them very sensitive, and they may react strongly to things that you are allergic to or find irritating. When your airways react, they get narrower and your lungs get less air.

Symptoms of asthma include

Not all people who have asthma have these symptoms. Having these symptoms doesn't always mean that you have asthma. Your doctor will diagnose asthma based on lung function tests, your medical history, and a physical exam. You may also have allergy tests.

When your asthma symptoms become worse than usual, it's called an asthma attack. Severe asthma attacks may require emergency care, and they can be fatal.

Asthma is treated with two kinds of medicines: quick-relief medicines to stop asthma symptoms and long-term control medicines to prevent symptoms.

NIH: National Heart, Lung, and Blood Institute


[Learn More in MedlinePlus]

Allergic asthma Asthma is a breathing disorder characterized by inflammation of the airways and recurrent episodes of breathing difficulty. These episodes, sometimes referred to as asthma attacks, are triggered by irritation of the inflamed airways. In allergic asthma, the attacks occur when substances known as allergens are inhaled, causing an allergic reaction. Allergens are harmless substances that the body's immune system mistakenly reacts to as though they are harmful. Common allergens include pollen, dust, animal dander, and mold. The immune response leads to the symptoms of asthma. Allergic asthma is the most common form of the disorder.A hallmark of asthma is bronchial hyperresponsiveness, which means the airways are especially sensitive to irritants and respond excessively. Because of this hyperresponsiveness, attacks can be triggered by irritants other than allergens, such as physical activity, respiratory infections, or exposure to tobacco smoke, in people with allergic asthma.An asthma attack is characterized by tightening of the muscles around the airways (bronchoconstriction), which narrows the airway and makes breathing difficult. Additionally, the immune reaction can lead to swelling of the airways and overproduction of mucus. During an attack, an affected individual can experience chest tightness, wheezing, shortness of breath, and coughing. Over time, the muscles around the airways can become enlarged (hypertrophied), further narrowing the airways.Some people with allergic asthma have another allergic disorder, such as hay fever (allergic rhinitis) or food allergies. Asthma is sometimes part of a series of allergic disorders, referred to as the atopic march. Development of these conditions typically follows a pattern, beginning with eczema (atopic dermatitis), followed by food allergies, then hay fever, and finally asthma. However, not all individuals with asthma have progressed through the atopic march, and not all individuals with one allergic disease will develop others.
[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)