ICD-10-CM D84: Other immunodeficiencies

ICD-10-CM Diagnosis Code (2025)

Official Description for D84

Other immunodeficiencies

Coding Notes & Guidelines for D84

Excludes1: Not Coded Here
  • certain disorders involving the immune mechanism (D80-D83, D84.0, D84.1, D84.9)
  • human immunodeficiency virus [HIV] disease (B20)
Code First
  • underlying condition, such as:
  • chromosomal abnormalities (Q90-Q99)
  • diabetes mellitus (E08-E13)
  • malignant neoplasms (C00-C96)
Use Additional Code

code for adverse effect if applicable, to identify adverse effect of drug (T36-T50 with fifth or six character 5)

Use Additional Code
  • code, if applicable, for associated long term (current) drug therapy drug or medication such as:
  • long term (current) drug therapy systemic steroids (Z79.52)
  • other long term (current) drug therapy (Z79.899)
Use Additional Code
  • code for external cause such as:
  • exposure to ionizing radiation (W88)
Inclusion Terms

C1 esterase inhibitor [C1-INH] deficiency

Inclusion Terms

Immunodeficiency due to (current or past) medication

Inclusion Terms
  • Immunocompromised NOS
  • Immunodeficient NOS
  • Immunosuppressed NOS
Code Also

, if applicable, radiological procedure and radiotherapy (Y84.2)

Child Codes (More Specific Codes for D84):

D84.0 - Lymphocyte function antigen-1 [LFA-1] defect D84.1 - Defects in the complement system D84.8 - Other specified immunodeficiencies D84.81 - Immunodeficiency due to conditions classified elsewhere D84.82 - Immunodeficiency due to drugs and external causes D84.821 - Immunodeficiency due to drugs D84.822 - Immunodeficiency due to external causes D84.89 - Other immunodeficiencies D84.9 - Immunodeficiency, unspecified

About ICD-10-CM Code D84 (Other immunodeficiencies)

ICD-10-CM code D84 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM D84 became effective on October 1, 2024.

This page provides detailed information about D84 - Other immunodeficiencies. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other immunodeficiencies.