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ICD-10-CM
J00-J99
J20-J22
J21
J21
2026
Non-billable
Acute bronchiolitis
Clinical Notes
Excludes2
1
Not included here
FAQ
Is J21 a billable ICD-10 code?
What does ICD-10 code J21 mean?
What is the parent category for ICD-10 code J21?
What conditions should be coded separately from J21?
Related Codes
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J21
Acute bronchiolitis
J21.0
due to respiratory syncytial virus
J21.1
due to human metapneumovirus
J21.8
due to other specified organisms
J21.9
unspecified
Related Categories
J20
Acute bronchitis
J22
Unspecified acute lower respiratory infection
Show Notes
2026