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L04.0 – Acute Lymphadenitis Face, Head and Neck
L04.0 is the ICD-10 diagnosis code for acute lymphadenitis of the face, head, and neck – a painful inflammation of the lymph nodes in this region.
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L04.0 is the ICD-10 diagnosis code for acute lymphadenitis of the face, head, and neck – a painful inflammation of the lymph nodes in this region.
What is L04.0?
L04.0 is the ICD-10 diagnosis code for acute lymphadenitis of the face, head, and neck. Lymphadenitis refers to inflammation of the lymph nodes, usually triggered by a nearby infection. The condition frequently occurs as a secondary finding in infections of the mouth, throat, or dental region.
Causes
Acute lymphadenitis is most commonly caused by bacterial or viral pathogens that travel via the lymphatic system from a nearby infection site into the lymph nodes. Common triggers include:
- Bacterial infections: e.g., streptococci, staphylococci (most frequent pathogens)
- Viral infections: e.g., Epstein-Barr virus (infectious mononucleosis), adenoviruses
- Dental infections and abscesses in the jaw or dental area
- Tonsillitis and pharyngitis (throat infection)
- Wounds or skin infections on the face or head
- Otitis media (middle ear infection)
Symptoms
Typical symptoms of acute lymphadenitis in the face, head, and neck area include:
- Painful, swollen lymph nodes along the neck, under the jaw, or behind the ears
- Redness and warmth over the affected lymph nodes
- General malaise and fatigue
- Fever, often indicating a systemic inflammatory response
- Possible fluctuation (softening) of lymph nodes if an abscess forms
- Restricted neck movement or pain when swallowing
Diagnosis
The diagnosis is usually made clinically. The physician palpates the lymph nodes and assesses size, consistency, and tenderness. Additional diagnostic measures may include:
- Blood tests: Elevated inflammatory markers (CRP, leukocytosis) indicate infection
- Ultrasound: To evaluate lymph node size and distinguish an abscess
- Swabs or cultures: To identify the causative pathogen in purulent cases
- CT or MRI: When deeper infections or complications are suspected
Treatment
Treatment depends on the underlying cause:
- Antibiotics: First-line therapy for bacterial causes (e.g., amoxicillin-clavulanate, cephalosporins)
- Analgesics and anti-inflammatory drugs: To relieve pain and inflammation (e.g., ibuprofen, paracetamol)
- Surgical drainage: Required if an abscess has formed, involving incision and irrigation
- Treatment of the underlying condition: e.g., tooth extraction, treatment of tonsillitis
- Cooling compresses: May help relieve local discomfort
When to See a Doctor?
If swollen, tender lymph nodes in the neck or face do not resolve within a few days, or if high fever, severe swelling, or difficulty swallowing occur, medical attention should be sought promptly. Untreated lymphadenitis can progress to an abscess or phlegmon (diffuse soft-tissue infection).
References
- World Health Organization (WHO): ICD-10 International Statistical Classification of Diseases and Related Health Problems, 10th Revision, Vol. 1. Geneva: WHO, 2019.
- Brook, I.: Microbiology and management of peritonsillar, retropharyngeal, and parapharyngeal abscesses. Journal of Oral and Maxillofacial Surgery, 2004; 62(12):1545–1550. PubMed PMID: 15573356.
- Leung, A.K.C. & Davies, H.D.: Cervical lymphadenitis: etiology, diagnosis, and management. Current Infectious Disease Reports, 2009; 11(3):183–189. PubMed PMID: 19366573.
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