L04
Non-billableAcute lymphadenitis
Acute lymphadenitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- abscess (acute) of lymph nodes, except mesenteric
- acute lymphadenitis, except mesenteric
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •lipomelanotic reticulosisI89.8
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •viral wartsB07
- •hordeolumH00.0
- •infective dermatitisL30.3
- local infections of skin classified in Chapter 1
- •lupus panniculitisL93.2
- •panniculitis NOSM79.3
- •panniculitis of neck and backM54.0
- •Perlèche NOSK13.0
- •Perlèche due to candidiasisB37.0
- •Perlèche due to riboflavin deficiencyE53.0
- •pyogenic granulomaL98.0
- •relapsing panniculitis [Weber-Christian]M35.6
- •zosterB02
Use Additional Code
Additional codes that should follow this code
Child Codes (6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(8)
Frequently Asked Questions
What is the ICD-10 code for acute lymphadenitis?
The ICD-10-CM code for acute lymphadenitis is L04. The full clinical description is "Acute lymphadenitis". L04 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code L04 mean?
ICD-10-CM code L04 represents “Acute lymphadenitis”. It is classified under Chapter 12: Diseases of the Skin and Subcutaneous Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is L04 a billable code?
No, L04 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under L04.
What chapter is L04 in?
L04 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L04?
L04 has Excludes1 notes indicating codes that cannot be used together with it, including: chronic or subacute lymphadenitis, except mesenteric (I88.1); enlarged lymph nodes (R59.-); human immunodeficiency virus [HIV] disease resulting in generalized lymphadenopathy (B20); and 2 more.
What are the subcategories under L04?
L04 has 6 child codes, including: L04.0 (Acute lymphadenitis of face, head and neck), L04.1 (Acute lymphadenitis of trunk), L04.2 (Acute lymphadenitis of upper limb), L04.3 (Acute lymphadenitis of lower limb), and 2 more.
Are additional codes required with L04?
Yes, when using L04, also report: code (B95-B97) to identify infectious agent..
What are the UMLS CUIs for L04?
L04 is linked to 3 UMLS Concept Unique Identifiers: C0157705, C4290218, C0272395. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does L04 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like acute lymphadenitis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of L04?
L04 maps to the ICD-11 code: BD90.0 (Acute lymphadenitis).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.