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J21.9 - Acute bronchiolitis, unspecified


The ICD 10 Code for Acute bronchiolitis, unspecified is listed as J21.9.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: J21.9
Description: Acute bronchiolitis, unspecified
  • Bronchiolitis (acute)
  • Excludes1: chronic bronchiolitis (J44.-)
Diagnostic Related Groups
(MS-DRG v30.0)
202 - Bronchitis & Asthma W Cc/mcc
203 - Bronchitis & Asthma W/o Cc/mcc
Chapter Diseases of the respiratory system (J00-J99)
Block Other acute lower respiratory infections (J20-J22)
Parent J21 - Acute bronchiolitis
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 466.19 - Acute bronchiolitis due to other infectious organisms (approximate)
ICD-10-CM Siblings (same level / similar specificity) of J21.9:
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