J40-J4A
Chronic lower respiratory diseases
Block coding notes
Excludes 1 never together · Excludes 2 may co-exist
Codes in this block
53 codes
Billableusable codeNon-billableheader / grouping codeRisk-adjusting
- J40Bronchitis, not specified as acute or chronicBillable
- J41Simple and mucopurulent chronic bronchitisNon-billable
- J41.0Simple chronic bronchitisBillable
- J41.1Mucopurulent chronic bronchitisBillable
- J41.8Mixed simple and mucopurulent chronic bronchitisBillable
- J42Unspecified chronic bronchitisBillable
- J43EmphysemaNon-billable
- J43.0Unilateral pulmonary emphysema [MacLeod's syndrome]Billable
- J43.1Panlobular emphysemaBillable
- J43.2Centrilobular emphysemaBillable
- J43.8Other emphysemaBillable
- J43.9Emphysema, unspecifiedBillable
- J44Other chronic obstructive pulmonary diseaseNon-billable
- J44.0Chronic obstructive pulmonary disease with (acute) lower respiratory infectionBillable
- J44.1Chronic obstructive pulmonary disease with (acute) exacerbationBillable
- J44.8Other specified chronic obstructive pulmonary diseaseNon-billable
- J44.81Bronchiolitis obliterans and bronchiolitis obliterans syndromeBillable
- J44.89Other specified chronic obstructive pulmonary diseaseBillable
- J44.9Chronic obstructive pulmonary disease, unspecifiedBillable
- J45AsthmaNon-billable
- J45.2Mild intermittent asthmaNon-billable
- J45.20Mild intermittent asthma, uncomplicatedBillable
- J45.21Mild intermittent asthma with (acute) exacerbationBillable
- J45.22Mild intermittent asthma with status asthmaticusBillable
- J45.3Mild persistent asthmaNon-billable
- J45.30Mild persistent asthma, uncomplicatedBillable
- J45.31Mild persistent asthma with (acute) exacerbationBillable
- J45.32Mild persistent asthma with status asthmaticusBillable
- J45.4Moderate persistent asthmaNon-billable
- J45.40Moderate persistent asthma, uncomplicatedBillable
- J45.41Moderate persistent asthma with (acute) exacerbationBillable
- J45.42Moderate persistent asthma with status asthmaticusBillable
- J45.5Severe persistent asthmaNon-billable
- J45.50Severe persistent asthma, uncomplicatedBillable
- J45.51Severe persistent asthma with (acute) exacerbationBillable
- J45.52Severe persistent asthma with status asthmaticusBillable
- J45.9Other and unspecified asthmaNon-billable
- J45.90Unspecified asthmaNon-billable
- J45.901Unspecified asthma with (acute) exacerbationBillable
- J45.902Unspecified asthma with status asthmaticusBillable
- J45.909Unspecified asthma, uncomplicatedBillable
- J45.99Other asthmaNon-billable
- J45.990Exercise induced bronchospasmBillable
- J45.991Cough variant asthmaBillable
- J45.998Other asthmaBillable
- J47BronchiectasisNon-billable
- J47.0Bronchiectasis with acute lower respiratory infectionBillable
- J47.1Bronchiectasis with (acute) exacerbationBillable
- J47.9Bronchiectasis, uncomplicatedBillable
- J4AChronic lung allograft dysfunctionNon-billable
- J4A.0Restrictive allograft syndromeBillable
- J4A.8Other chronic lung allograft dysfunctionBillable
- J4A.9Chronic lung allograft dysfunction, unspecifiedBillable
Official Guidelines for J40-J4A
FY 2026 ›Sections that reference codes in J40-J4A