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J21.0

Billable

Acute bronchiolitis due to respiratory syncytial virus

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Acute inflammation of the smallest airways in the lungs (bronchioles) caused by respiratory syncytial virus, commonly seen in infants and young children.

Coding Tips

  • •RSV bronchiolitis is a common pediatric condition; verify RSV is confirmed through testing or clinical documentation
  • •This code is more specific than J21.9 and should be used when RSV etiology is documented

Code Hierarchy

└J21Acute bronchiolitis└J21.0Acute bronchiolitis due to respiratory syncytial virus
└J21.0Acute bronchiolitis due to respiratory syncytial virus

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