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ICD-10-CM Code D84.9
Immunodeficiency, unspecified

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

D84.9 is a billable ICD code used to specify a diagnosis of immunodeficiency, unspecified. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code D849 is used to code Autoimmune disease

Autoimmune diseases arise from an abnormal immune response of the body against substances and tissues normally present in the body (autoimmunity). This may be restricted to certain organs (e.g. in autoimmune thyroiditis) or involve a particular tissue in different places (e.g. Goodpasture's disease which may affect the basement membrane in both the lung and the kidney).

Specialty: Rheumatology, Gastroenterology
MeSH Codes: D001327, D007153
ICD 9 Codes: 279.4, 279.3
Source: Wikipedia

MS-DRG Mapping

  • DRG Group #814-816 - Reticuloendothelial and immunity disorders with MCC.
  • DRG Group #814-816 - Reticuloendothelial and immunity disorders with CC.
  • DRG Group #814-816 - Reticuloendothelial and immunity disorders without CC or MCC.

Related Concepts SNOMET-CT

  • Anhidrotic ectodermal dysplasia with immune deficiency (disorder)

ICD-10-CM Alphabetical Index References for 'D84.9 - Immunodeficiency, unspecified'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code D84.9. Click on any term below to browse the alphabetical index.

Immunodeficiency (D84.9)


Unspecified immunity deficiency (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code D84.9 and a single ICD9 code, 279.3 is an approximate match for comparison and conversion purposes.

Parent Code: D84 - Other immunodeficiencies

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/D849