About Section J40-J4A

Section J40-J4A covers Chronic lower respiratory diseases within Chapter 10 of the ICD-10-CM Tabular List. This section includes diagnosis codes ranging from J40 to J4A. Each code below includes its description, billable status, and links to detailed coding guidelines.

Diagnosis Codes 53 entries

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›