ICD-10 Code
International Classification of Diseases, 10th Revision
Jan 23, 2019
  ICD-10 Code for Acute bronchiolitis, unspecified J21.9

J21.9 is a valid1 ICD 10 diagnosis code.

J21.9 is valid for submission for HIPAA-covered transactions.

Chapter 10 Diseases of the respiratory system (J00-J99)
Section J20-J22 Other acute lower respiratory infections (J20-J22)
Category J21 Acute bronchiolitis

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Bronchiolitis (acute)
  • chronic bronchiolitis (J44.-)
See also ICD 10 code for

Related Terms to “Acute bronchiolitis, unspecified”

  • Bronchiolitis(acute) (infective) (subacute) - J21.9
    • with
      • bronchospasm or obstruction - J21.9
  • Bronchospasm(acute) - J98.01
    • with
      • bronchiolitis, acute - J21.9
See the ICD-10-CM Coding Guidelines.

Questions related to J21.9 Acute bronchiolitis, unspecified

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.