J21.9
J21.9: Acute bronchiolitis, unspecified
Billable / specific codeICD-10-CM
J21.9 is a billable, specific ICD-10-CM code for acute bronchiolitis, unspecified. It is valid for submission on a claim.
Check J21.9 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- chronic bronchiolitis (J44.89)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Bronchiolitis (acute)
Other codes that can never be billed with J21.9
Their own Excludes1 notes name this code, so the conflict is not listed above.
- J98.01Acute bronchospasm
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
J21.9 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
- A56730Billing and Coding: Respiratory Therapy and Oximetry Services
- A57205Billing and Coding: Oximetry Services
Alphabetic index entries that lead here
- Bronchiolitis(acute) (infective) (subacute)
- Bronchiolitis›with›bronchospasm or obstruction
- Bronchospasm›with›bronchiolitis, acute
Code history
Unchanged in every release from FY2024 to FY2027.