ICD10

ICD-10 Code D84.8: Other specified immunodeficiencies

D84.8 is an ICD-10 diagnosis entry used to group records related to Other specified immunodeficiencies. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

When is it used?

  • May be used when a clinician documents other specified immunodeficiencies in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter
3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
block
D80-D89Certain disorders involving the immune mechanism
category
D84Other immunodeficiencies
currentD84

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

HematologistGeneral Physician

Mapped diagnoses and classifications

SNOMED_CT 784393004high
Adult-onset immunodeficiency with anti-interferon-gamma autoantibodies
Source: SNOMED International ICD-10 map
SNOMED_CT 1197361002high
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 725150008high
Autosomal dominant mendelian susceptibility to mycobacterial disease due to partial interferon gamma receptor 1 deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 725151007high
Autosomal dominant mendelian susceptibility to mycobacterial disease due to partial interferon gamma receptor 2 deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 1370959009high
Autosomal dominant predisposition to severe viral infection due to TLR3 deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 1371051000high
Autosomal dominant predisposition to severe viral infection due to TRAF3 deficiency
Source: SNOMED International ICD-10 map

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
D84.8
Replacement codes
D84.81 — Immunodeficiency due to conditions classified elsewhereD84.89 — Other immunodeficiencies

Common synonyms

Other specified immunodeficiencies

Frequently asked questions

Code details

CodeD84.8
SystemICD10
Display nameOther specified immunodeficiencies
ChapterDiseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
BlockCertain disorders involving the immune mechanism

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code D84.8 for Other specified immunodeficiencies | HealthAssure