2021 ICD-10-CM Code D84.81

Immunodeficiency due to conditions classified elsewhere

Version 2021
Billable Code
New Code
Manifestation Diagnoses
MS-DRG Mapping

Valid for Submission

D84.81 is a billable diagnosis code used to specify a medical diagnosis of immunodeficiency due to conditions classified elsewhere. The code D84.81 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 D84.81 might also be used to specify conditions or terms like immunodeficiency associated with chromosomal abnormality.

ICD-10:D84.81
Short Description:Immunodeficiency due to conditions classified elsewhere
Long Description:Immunodeficiency due to conditions classified elsewhere

Code Classification

New 2021 ICD-10 Code

D84.81 is new to ICD-10 code set for the FY 2021, effective October 1, 2020. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2020. This is a new and revised code for the FY 2021 (October 1, 2020 - September 30, 2021).

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code D84.81:


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

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 D84.81 are found in the index:

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

Approximate Synonyms

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

Replacement Code

D8481 replaces the following previously assigned ICD-10 code(s):

Code History

  • FY 2021 - Code Added, effective from 10/1/2020 through 9/30/2021