ICD-10-CM > J00-J99 > J40-J4A > J4A J4A Chronic lung allograft dysfunction Non-Billable/Non-Specific Code First , if applicable:heart-lung transplant rejection (T86.31)lung transplant rejection (T86.810)other complications of heart-lung transplant (T86.39)other complications of lung transplant (T86.818) Code Also , if applicable, bronchiolitis obliterans syndrome (J44.81) Codes J4A.0Restrictive allograft syndromeJ4A.8Other chronic lung allograft dysfunctionJ4A.9Chronic lung allograft dysfunction, unspecified