J45
ICD-10Non-billable categoryAsthma
Official ICD-10-CM descriptor (FY2026)
Asthma
J45 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
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
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- detergent asthma (J69.8)
- miner's asthma (J60)
- wheezing NOS (R06.2)
- wood asthma (J67.8)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- 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
Report an additional code to identify the associated condition.
- 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)
More specific codes under J45
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.