Is L04 a billable code?
No. L04 is a header code that groups 6 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
L04: Acute lymphadenitis
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
L04 groups related diagnoses under acute lymphadenitis. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
L04 questions
What does L04 mean?
L04 is the ICD-10-CM code for Acute lymphadenitis. It is in chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.