J4A
⚠ Non-billable (Header)Chronic lung allograft dysfunction
Diseases of the respiratory system (J00-J99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
📋 Code Instructions
direct- • Code first: , if applicable:
- • Code first: heart-lung transplant rejection (T86.31)
- • Code first: lung transplant rejection (T86.810)
- • Code first: other complications of heart-lung transplant (T86.39)
- • Code first: other complications of lung transplant (T86.818)
Child Codes (3)
Clinical Description
ICD-10-CM code J4A represents chronic lung allograft dysfunction. This code falls under the Diseases of the respiratory system (J00-J99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
Frequently Asked Questions
What is ICD-10 code J4A?
ICD-10-CM code J4A is "Chronic lung allograft dysfunction". It belongs to the category: Diseases of the respiratory system (J00-J99).
Is J4A a billable ICD-10 code?
No, J4A is a non-billable header code. A more specific child code must be used for billing.
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)