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J4A

Non-billable

Chronic lung allograft dysfunction

J4A is the ICD-10-CM code for Chronic lung allograft dysfunction. It is a non-billable category code — use a more specific child code such as J4A.0 for billing.

Status
Header (non-billable)
Chapter
J00-J99
Subcodes
3
Edition
FY2026

J00-J99 Diseases of the respiratory system

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)

Notes

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

Frequently asked questions

What is ICD-10 code J4A?
J4A is the ICD-10-CM code for "Chronic lung allograft dysfunction". It falls under J00-J99 Diseases of the respiratory system.
Is J4A a billable code?
No — J4A is a non-billable header code. Use a more specific child code (such as J4A.0) for billing.
What are the subcodes of J4A?
J4A has 3 more specific child codes, including J4A.0, J4A.8, J4A.9.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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