ICD-10-CM 2027
ICD-10 code for COPD (chronic obstructive pulmonary disease)
Confirmed by the official ICD-10-CM index entry “disease, diseased › pulmonary › chronic obstructive”. Page updated September 29, 2026.
About coding COPD
The ICD-10-CM code for COPD (chronic obstructive pulmonary disease) is J44.9 (Chronic obstructive pulmonary disease, unspecified). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J44.9.
It is also searched as chronic obstructive lung disease.
Within J44, choose J44.9 (Chronic obstructive pulmonary disease, unspecified) only when documentation doesn't support a more specific option: chronic obstructive pulmonary disease with (acute) lower respiratory infection (J44.0), chronic obstructive pulmonary disease with (acute) exacerbation (J44.1) and other specified chronic obstructive pulmonary disease (J44.8).
The conditions in its Excludes2 note aren't part of J44.9, but may be coded alongside it if the patient has both: lung diseases due to external agents (J60-J70).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Related COPD codes
Common questions about COPD ICD-10 codes
What is the ICD-10 code for COPD?
- J44.9 — Chronic obstructive pulmonary disease, unspecified. More specific codes apply when the documentation supports them: J44.0, J44.1, J44.81, J44.89.
What is the ICD-10 code for chronic obstructive pulmonary disease with (acute) lower respiratory infection?
- J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection.
What is the ICD-10 code for chronic obstructive pulmonary disease with (acute) exacerbation?
- J44.1 — Chronic obstructive pulmonary disease with (acute) exacerbation.
What is the ICD-10 code for bronchiolitis obliterans and bronchiolitis obliterans syndrome?
- J44.81 — Bronchiolitis obliterans and bronchiolitis obliterans syndrome.
What is the ICD-10 code for other specified chronic obstructive pulmonary disease?
- J44.89 — Other specified chronic obstructive pulmonary disease.
Is J44.9 billable?
- Yes. J44.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J44.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J44.9 as a principal diagnosis.
Is J44.9 a CC or MCC?
- No. J44.9 is neither a CC nor an MCC under MS-DRG v44.0.