2021 ICD-10-CM Code D84

Other immunodeficiencies

Version 2021

Not Valid for Submission

D84 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other immunodeficiencies. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:D84
Short Description:Other immunodeficiencies
Long Description:Other immunodeficiencies

Code Classification

Specific Coding for Other immunodeficiencies

Non-specific codes like D84 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for other immunodeficiencies:

  • BILLABLE CODE - Use D84.0 for Lymphocyte function antigen-1 [LFA-1] defect
  • BILLABLE CODE - Use D84.1 for Defects in the complement system
  • NON-BILLABLE CODE - D84.8 for Other specified immunodeficiencies
  • BILLABLE CODE - Use D84.81 for Immunodeficiency due to conditions classified elsewhere
  • NON-BILLABLE CODE - D84.82 for Immunodeficiency due to drugs and external causes
  • BILLABLE CODE - Use D84.89 for Other immunodeficiencies
  • BILLABLE CODE - Use D84.9 for Immunodeficiency, unspecified

Clinical Information

Information for Patients


Immune System and Disorders

Your immune system is a complex network of cells, tissues, and organs that work together to defend against germs. It helps your body to recognize these "foreign" invaders. Then its job is to keep them out, or if it can't, to find and destroy them.

If your immune system cannot do its job, the results can be serious. Disorders of the immune system include

NIH: National Institute of Allergy and Infectious Diseases


[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)