L04 is the ICD-10 code for Acute lymphadenitis. It is a three-character category divided into 6 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block L00–L08 (Infections of the skin and subcutaneous tissue) in Chapter XII, Diseases of the skin and subcutaneous tissue.
- Code type
- Category (3 characters)
- Chapter
- XII · L00–L99
- Classification
- WHO ICD-10, 2019 version
What L04 includes
Conditions and terms that are coded here.
- abscess (acute)
- any lymph node, except mesenteric
- lymphadenitis, acute
- any lymph node, except mesenteric
What L04 excludes
Conditions that look similar but belong under another code.
Subcodes of L04
L04 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DL04Akut lymfadenitis
L04Akuutti imusolmuketulehdus
L04Akute Lymphadenitis
L04Lymphadénite aiguë
L04acute lymfadenitis
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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