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J21.9

Acute bronchiolitis, unspecified

Billable

Code Hierarchy

J21J21.9

Chapter: 10. Diseases of the respiratory system

Section: J20-J22 - Other acute lower respiratory infections

Coding Guidelines

Inclusion Terms

  • Bronchiolitis (acute)

Excludes1 (Mutually Exclusive)

These codes should never be used together with J21.9

  • J44.89 - chronic bronchiolitis (J44.89)

Related Codes

J21.0Billable

Acute bronchiolitis due to respiratory syncytial virus

J21.1Billable

Acute bronchiolitis due to human metapneumovirus

J21.8Billable

Acute bronchiolitis due to other specified organisms

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