ICD-10-CM J21: Acute bronchiolitis

ICD-10-CM Diagnosis Code (2025)

Official Description for J21

Acute bronchiolitis

Coding Notes & Guidelines for J21

Includes Notes

acute bronchiolitis with bronchospasm

Excludes1: Not Coded Here

chronic bronchiolitis (J44.89)

Excludes2: Not Included Here

respiratory bronchiolitis interstitial lung disease (J84.115)

Inclusion Terms

Acute bronchiolitis due to RSV

Inclusion Terms

Bronchiolitis (acute)

Child Codes (More Specific Codes for J21):

J21.0 - Acute bronchiolitis due to respiratory syncytial virus J21.1 - Acute bronchiolitis due to human metapneumovirus J21.8 - Acute bronchiolitis due to other specified organisms J21.9 - Acute bronchiolitis, unspecified

About ICD-10-CM Code J21 (Acute bronchiolitis)

ICD-10-CM code J21 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM J21 became effective on October 1, 2024.

This page provides detailed information about J21 - Acute bronchiolitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Acute bronchiolitis.