ICD-10-CM 2027
ICD-10 code for Bronchoalveolitis
Bronchopneumonia, unspecified organism
From the official ICD-10-CM alphabetic index entry “Bronchoalveolitis”. Page updated September 29, 2026.
About coding Bronchoalveolitis
The ICD-10-CM code for Bronchoalveolitis is J18.0 (Bronchopneumonia, unspecified organism).
Within J18, choose J18.0 (Bronchopneumonia, unspecified organism) only when documentation doesn't support a more specific option: Lobar pneumonia, unspecified organism (J18.1), Hypostatic pneumonia, unspecified organism (J18.2), other pneumonia, unspecified organism (J18.8) and pneumonia, unspecified organism (J18.9).
Don't report J18.0 together with the conditions in its Excludes1 note: hypostatic bronchopneumonia (J18.2) and lipid pneumonia (J69.1).
The conditions in its Excludes2 note aren't part of J18.0, but may be coded alongside it if the patient has both: acute bronchiolitis (J21.-), chronic bronchiolitis (J44.89) and other specified chronic obstructive pulmonary disease (J44.89).
Don't confuse with (Excludes1 for J18.0)
Common questions about Bronchoalveolitis ICD-10 codes
What is the ICD-10 code for Bronchoalveolitis?
- J18.0 — Bronchopneumonia, unspecified organism.
Is J18.0 billable?
- Yes. J18.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J18.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J18.0 as a principal diagnosis.
Is J18.0 a CC or MCC?
- J18.0 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.