2026 ICD-10-CM Diagnosis Code J4AChronic lung allograft dysfunction
J4A is a non-billable ICD-10-CM category code for chronic lung allograft dysfunction, so it cannot be submitted on claims. Use a more specific code from this category instead, such as J4A.0, J4A.8, and J4A.9.
Code Identity
Code Classification
Specific Coding for Chronic lung allograft dysfunctionOverview
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
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
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
Code HistoryHistory
Questions About J4AOverview
Is J4A (Chronic lung allograft dysfunction) a billable code?
No. This is a category header that groups the codes for chronic lung allograft dysfunction, and headers cannot be submitted on claims. Claims for chronic lung allograft dysfunction need a more specific code from this category, such as J4A.0, J4A.8, and J4A.9.
