Asthma (J45)
Clinical Information
Airway Remodeling - The structural changes in the number, mass, size and/or composition of the airway tissues.
Asthma - A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).
Asthma, Aspirin-Induced - Asthmatic adverse reaction (e.g., BRONCHOCONSTRICTION) to conventional NSAIDS including aspirin use.
Asthma, Exercise-Induced - Asthma attacks following a period of exercise. Usually the induced attack is short-lived and regresses spontaneously. The magnitude of postexertional airway obstruction is strongly influenced by the environment in which exercise is performed (i.e. inhalation of cold air during physical exertion markedly augments the severity of the airway obstruction; conversely, warm humid air blunts or abolishes it).
Asthma, Occupational - Asthma attacks caused, triggered, or exacerbated by OCCUPATIONAL EXPOSURE.
Asthma-Chronic Obstructive Pulmonary Disease Overlap Syndrome - Syndrome with clinical features of both ASTHMA and COPD.
Conyza - A plant genus of the family ASTERACEAE. Members contain alkenynes, daucosterol, friedelinol, conyzasaponins and other TRITERPENES.
Dyspnea, Paroxysmal - A disorder characterized by sudden attacks of respiratory distress in at rest patients with HEART FAILURE and PULMONARY EDEMA. It usually occurs at night after several hours of sleep in a reclining position. Patients awaken with a feeling of suffocation, coughing, a cold sweat, and TACHYCARDIA. When there is significant WHEEZING, it is called CARDIAC ASTHMA.
Occupational Exposure - The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
Status Asthmaticus - A sudden intense and continuous aggravation of a state of asthma, marked by dyspnea to the point of exhaustion and collapse and not responding to the usual therapeutic efforts.
Tylophora - A plant genus of the family ASCLEPIADACEAE. Members contain phenanthro-indolizidine alkaloids.
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- allergic (predominantly) asthma
- allergic bronchitis NOS
- allergic rhinitis with asthma
- atopic asthma
- extrinsic allergic asthma
- hay fever with asthma
- idiosyncratic asthma
- intrinsic nonallergic asthma
- nonallergic asthma
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.
- code to identify:
- eosinophilic asthma J82.83
- exposure to environmental tobacco smoke Z77.22
- exposure to tobacco smoke in the perinatal period P96.81
- history of tobacco dependence Z87.891
- occupational exposure to environmental tobacco smoke Z57.31
- tobacco dependence F17
- tobacco use Z72.0
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
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.
- asthma with chronic obstructive pulmonary disease J44.9
- chronic asthmatic obstructive bronchitis J44.9
- chronic obstructive asthma J44.9
Diseases of the respiratory system (J00–J99)
Chronic lower respiratory diseases (J40-J4A)
J45 Asthma
J45.2 Mild intermittent asthma
- J45.20 Mild intermittent asthma, uncomplicated
- J45.21 Mild intermittent asthma with (acute) exacerbation
- J45.22 Mild intermittent asthma with status asthmaticus
J45.3 Mild persistent asthma
- J45.30 Mild persistent asthma, uncomplicated
- J45.31 Mild persistent asthma with (acute) exacerbation
- J45.32 Mild persistent asthma with status asthmaticus
J45.4 Moderate persistent asthma
- J45.40 Moderate persistent asthma, uncomplicated
- J45.41 Moderate persistent asthma with (acute) exacerbation
- J45.42 Moderate persistent asthma with status asthmaticus
J45.5 Severe persistent asthma
- J45.50 Severe persistent asthma, uncomplicated
- J45.51 Severe persistent asthma with (acute) exacerbation
- J45.52 Severe persistent asthma with status asthmaticus
J45.9 Other and unspecified asthma
J45.90 Unspecified asthma
- J45.901 Unspecified asthma with (acute) exacerbation
- J45.902 Unspecified asthma with status asthmaticus
- J45.909 Unspecified asthma, uncomplicated
J45.99 Other asthma
- J45.990 Exercise induced bronchospasm
- J45.991 Cough variant asthma
- J45.998 Other asthma
Asthma (J45)