MCMedicalCodingSoftware
J45.90

J45.90: Unspecified asthma

Non-billable headerICD-10-CM

J45.90 is a non-billable header ICD-10-CM code for unspecified asthma. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Asthmatic bronchitis NOS
  • Childhood asthma NOS
  • Late onset asthma

Excludes1 inherited from the categories above J45.90

A category’s note binds every code beneath it.

Written on J45: Asthma

Excludes2 inherited from the categories above J45.90

Not part of this code, but both may be coded when both are present.

Written on J45: Asthma

  • 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)

Other codes that can never be billed with J45.90

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • J30Vasomotor and allergic rhinitis
  • J40Bronchitis, not specified as acute or chronic
  • J98.01Acute bronchospasm
  • R06.2Wheezing

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead J45.90

3 child codes. Green means billable.

Other codes under J45.9

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.