2024 ICD-10-CM Diagnosis Code L04.9

Acute lymphadenitis, unspecified

ICD-10-CM Code:
L04.9
ICD-10 Code for:
Acute lymphadenitis, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Diseases of the skin and subcutaneous tissue
    (L00–L99)
    • Infections of the skin and subcutaneous tissue
      (L00-L08)
      • Acute lymphadenitis
        (L04)

L04.9 is a billable diagnosis code used to specify a medical diagnosis of acute lymphadenitis, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like L04.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acute abscess lymph node
  • Acute HIV infection
  • Acute lymphadenitis
  • HIV infection with acute lymphadenitis
  • Infected lymphocele
  • Lymph node abscess
  • Lymphadenopathy co-occurrent with human immunodeficiency virus infection
  • Lymphocele
  • Suppurative lymphadenopathy

Clinical Classification

Clinical Information

  • Lymphocele

    cystic mass containing lymph from diseased lymphatic channels or following surgical trauma or other injury.
  • Acute Lymphadenitis

    acute inflammation of the lymph nodes.
  • Grade 1 Lymphocele, CTCAE|Grade 1 Lymphocele|Grade 1 Lymphocele

    asymptomatic; clinical or diagnostic observations only; intervention not indicated
  • Grade 2 Lymphocele, CTCAE|Grade 2 Lymphocele|Grade 2 Lymphocele

    symptomatic; medical intervention indicated
  • Grade 3 Lymphocele, CTCAE|Grade 3 Lymphocele|Grade 3 Lymphocele

    severe symptoms; invasive intervention indicated
  • Lymphocele

    a cystic lesion containing lymph. it usually results from injury, gynecologic surgery, or urologic surgery.
  • Lymphocele, CTCAE|Lymphocele|Lymphocele|Lymphocele

    a disorder characterized by a cystic lesion containing lymph.
  • Microsphere-Mediated Lymphocele Prevention

    a surgical technique that uses microspheres at the site of a lymph node resection in an effort to prevent the formation of a lymphocele.
  • Renal Lymphocele|Kidney Lymphocele|Kidney Lymphocele

    encapsulated collection of lymphatic fluid around a transplanted kidney.
  • Lymph Node Abscess

    an abscess that develops in a lymph node and the surrounding tissues as a result of an infectious process. the affected lymph node is palpable and tender.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert L04.9 to ICD-9-CM

  • ICD-9-CM Code: 683 - Acute lymphadenitis
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.