ICD-10-CM › J00-J99 › J40-J4B › J45.90 Unspecified asthma › J45.901
Unspecified asthma with (acute) exacerbation
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Unspecified asthma with (acute) exacerbation
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from J45 Asthma
Excludes1 - never coded here
- detergent asthma (J69.8)
- miner's asthma (J60)
- wheezing NOS (R06.2)
- wood asthma (J67.8)
Excludes2 - not included here
- asthma with chronic obstructive pulmonary disease (J44.89)
- chronic asthmatic (obstructive) bronchitis (J44.89)
- chronic obstructive asthma (J44.89)
- other specified chronic obstructive pulmonary disease (J44.89)
Use 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)
Includes
- 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
Inherited from the J40-J4B section Chronic lower respiratory diseases (J40-J4B)
Excludes1 - never coded here
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)
Excludes2 - not included here
- cystic fibrosis (E84.-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Icterus
- Cholemia
- Hay fever
- Impervious
- Imperforate
- Cold > chest
- Cold > on lung
- Rhinosinusitis
- Abscess > sinus
- Empyema > sinus
- Febris, febrile
- Fistula > sinus
- Pyocele > sinus
- Trouble > sinus
- Cold > bronchial
- Granuloma > sinus
- Tracheobronchitis
- Yellow > jaundice
- Postsurgery status
- Sequestrum > sinus
- Abscess > parasinus
- Disorder > allergic
- Hypersusceptibility
- Reaction > allergic
- Effusion > bronchial
- Sinusitis > allergic
- Status > asthmaticus
- Abscess > perisinuous
- Bronchitis > croupous
- Bronchitis > subacute
- Empyema > nasal sinus
- Abscess > nose > sinus
- Bronchitis > exudative
- Irritation > bronchial
- Rhinorrhea > spasmodic
- Sensitive, sensitivity
- Asthma, asthmatic > hay
- Fistula > nasal > sinus
- Granuloma > nasal sinus
- Reactive airway disease
Showing 40 of 123 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| J45.902 | Unspecified asthma with status asthmaticus | Valid |
| J45.909 | Unspecified asthma, uncomplicated | Valid |