J21.9

Acute bronchiolitis, unspecified

Billable / specific

J21.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

acute bronchiolitis with bronchospasm
Note: When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).

Not coded here — never report together with this code.

Not included here — may be reported together when both conditions exist.

certain conditions originating in the perinatal period (P04-P96) (from J21)
certain infectious and parasitic diseases (A00-B99) (from J21)
complications of pregnancy, childbirth and the puerperium (O00-O9A) (from J21)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) (from J21)
endocrine, nutritional and metabolic diseases (E00-E88) (from J21)
injury, poisoning and certain other consequences of external causes (S00-T88) (from J21)
neoplasms (C00-D49) (from J21)
smoke inhalation (T59.81-) (from J21)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from J21)
chronic obstructive pulmonary disease with acute lower respiratory infection (J44.0) (from J21)
respiratory bronchiolitis interstitial lung disease (J84.115) (from J21)

Add a code to identify the following, if applicable.

code, where applicable, to identify: (from J21)
exposure to environmental tobacco smoke (Z77.22) (from J21)
exposure to tobacco smoke in the perinatal period (P96.81) (from J21)
history of tobacco dependence (Z87.891) (from J21)
occupational exposure to environmental tobacco smoke (Z57.31) (from J21)
tobacco dependence (F17.-) (from J21)
tobacco use (Z72.0) (from J21)