2021 ICD-10-CM Code L04.0

Acute lymphadenitis of face, head and neck

Version 2021
Billable Code

Valid for Submission

L04.0 is a billable diagnosis code used to specify a medical diagnosis of acute lymphadenitis of face, head and neck. The code L04.0 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code L04.0 might also be used to specify conditions or terms like acute cervical adenitis, acute lymphadenitis, acute lymphadenitis of face, acute lymphadenitis of face, head and neck, acute lymphadenitis of head , acute lymphadenitis of neck, etc.

ICD-10:L04.0
Short Description:Acute lymphadenitis of face, head and neck
Long Description:Acute lymphadenitis of face, head and neck

Code Classification

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code L04.0 are found in the index:

Approximate Synonyms

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

Convert L04.0 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code L04.0 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


Lymphatic Diseases

The lymphatic system is a network of tissues and organs. It is made up of

Your bone marrow and thymus produce the cells in lymph. They are part of the system, too.

The lymphatic system clears away infection and keeps your body fluids in balance. If it's not working properly, fluid builds in your tissues and causes swelling, called lymphedema. Other lymphatic system problems can include infections, blockage, and cancer.


[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)