L04.9
BillableAcute lymphadenitis, unspecified
Acute lymphadenitis, unspecified
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
Related Codes(5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(39)
SNOMED CT
- Acute adenitis41174002
- Acute lymphadenitis41174002
- Lymph node abscess44298000
- Suppurative lymphadenitis48573006
- Suppurative lymphadenopathy48573006
- AIDS virus with acute lymphadenitis87117006
- HIV infection with acute lymphadenitis87117006
- Human immunodeficiency virus (HIV) infection with acute lymphadenitis87117006
- Human immunodeficiency virus infection with acute lymphadenitis87117006
- Acute HIV infection111880001
- Acute human immunodeficiency virus infection111880001
- Acute human immunodeficiency virus seroconversion illness111880001
- Lymphocele234109007
- Acute abscess lymph node275525005
- Infected lymphocele444997000
- Lymphadenopathy co-occurrent with human immunodeficiency virus infection713507008
UMLS
Clinical Terms
- Acute lymphadenitis (disorder)
- Human immunodeficiency virus infection with acute lymphadenitis
- Acute human immunodeficiency virus infection
- Lymph node abscess
- Acute human immunodeficiency virus seroconversion illness
- HIV infection with acute lymphadenitis
- Acute HIV infection
- Acute adenitis
- Suppurative lymphadenitis
- Lymphadenopathy co-occurrent with human immunodeficiency virus infection
- Infected lymphocele
- Acute abscess lymph node
- AIDS virus with acute lymphadenitis
- Lymphocele
- Suppurative lymphadenopathy
- Lymphadenitis acute
- Human immunodeficiency virus (HIV) infection with acute lymphadenitis
Frequently Asked Questions
What is the ICD-10 code for acute lymphadenitis, unspecified?
The ICD-10-CM code for acute lymphadenitis, unspecified is L04.9. The full clinical description is "Acute lymphadenitis, unspecified". L04.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code L04.9 mean?
ICD-10-CM code L04.9 represents “Acute lymphadenitis, unspecified”. It is classified under Chapter 12: Diseases of the Skin and Subcutaneous Tissue and is a billable/specific code that can be used on a claim.
Is L04.9 a billable code?
Yes, L04.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is L04.9 in?
L04.9 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L04.9?
L04.9 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.
Are additional codes required with L04.9?
Yes, when using L04.9, also report: code (B95-B97) to identify infectious agent..
What SNOMED CT codes does L04.9 map to?
L04.9 maps to 9 SNOMED CT concepts: 87117006, 111880001, 275525005, 41174002, 444997000, and 4 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for L04.9?
L04.9 is linked to 1 UMLS Concept Unique Identifier: C0157705. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does L04.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like acute lymphadenitis, unspecified 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 L04.9?
L04.9 maps to the ICD-11 code: BD90.0 (Acute lymphadenitis).
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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.