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ICD-10-CM Code D84.1
Defects in the complement system

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

D84.1 is a billable ICD code used to specify a diagnosis of defects in the complement system. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code D841 is used to code Angioedema

Angioedema, also known as angiooedema, Quincke's edema, and angioneurotic edema, is the rapid swelling (edema) of the dermis, subcutaneous tissue, mucosa and submucosal tissues. It is very similar to urticaria, but urticaria, commonly known as hives, occurs in the upper dermis.

Specialty: Allergy And Immunology
MeSH Codes: D000799, D000799
ICD 9 Codes: 277.6, 995.1

Allergic angioedema: this child is unable to open his eyes due to the swelling.

Source: Wikipedia

Coding Notes for D84.1 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
C1 esterase inhibitor [C1-INH] deficiency

MS-DRG Mapping

  • DRG Group #642 - Inborn and other disorders of metabolism.

Related Concepts SNOMET-CT

  • Cutis laxa with complement deficiency (disorder)

Coding Advice SNOMET-CT

  • Possible requirement for an external cause code

Equivalent ICD-9 Codes GENERAL EQUIVALENCE MAPPINGS (GEM)

Other deficiencies of circulating enzymes (approximate match)
Other specified disorders involving the immune mechanism (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 D84.1 and a single ICD9 code, 279.8 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/D841