Is J4A a billable ICD-10-CM code?

No. J4A is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does J4A sit in the tabular list?

Diseases of the respiratory system (J00-J99), in the block Chronic lower respiratory diseases (J40-J4A).

J4A

J4A — Chronic lung allograft dysfunction

Non-billable headerICD-10-CM

J4A is a non-billable header ICD-10-CM code for chronic lung allograft dysfunction. It cannot be billed on its own: choose one of the more specific child codes below.

Code first

The underlying condition must be sequenced before this code.

, 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

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

, if applicable, bronchiolitis obliterans syndrome (J44.81)

Risk adjustment

J4A does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead J4A

3 child codes. Green means billable.

Questions about J4A

Is J4A a billable ICD-10-CM code?: No. J4A is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does J4A sit in the tabular list?: Diseases of the respiratory system (J00-J99), in the block Chronic lower respiratory diseases (J40-J4A).