ICD-10-CM › D50-D89 › D80-D89 › D84 Other immunodeficiencies › D84.1
Defects in the complement system
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Defects in the complement system
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from the D80-D89 section Certain disorders involving the immune mechanism (D80-D89)
Excludes1 - never coded here
- autoimmune disease (systemic) NOS (M35.9)
- functional disorders of polymorphonuclear neutrophils (D71-)
Excludes2 - not included here
- human immunodeficiency virus [HIV] disease (B20)
Includes
- defects in the complement system
- immunodeficiency disorders, except human immunodeficiency virus [HIV] disease
- sarcoidosis
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Hives
- Wheal
- Pitted
- Deficit
- Pitting
- Lipedema
- Retained
- Bold hives
- Avitaminosis
- Rash > nettle
- Hypovitaminosis
- Retention > water
- Vitamin deficiency
- Exanthem, exanthema
- Leukoencephalopathy
- Deprivation > vitamins
- Edema, edematous > larynx
- Edema, edematous > epiglottis
- Edema, edematous > subglottic
- Deficiency, deficient > factor
- Defect, defective > coagulation
- Edema, edematous > supraglottic
- Deficiency, deficient > clotting
- Disturbance > absorption > vitamin
- Encephalopathy > in > lack of vitamin
- Deficiency, deficient > clotting factor NEC
- Episcleritis > periodica fugax > angioneurotic
- Deficiency, deficient > coagulation NOS > clotting factor NEC
- Angioedema > hereditary
- Giant > urticaria > hereditary
- Urticaria > giant > hereditary
- Urticaria > larynx > hereditary
- Angioneurotic edema > hereditary
- Bannister's disease > hereditary
- Defect, defective > complement system
- Quincke's disease or edema > hereditary
- Edema, edematous > periodic > hereditary
- Edema, edematous > Quincke's > hereditary
- Deficiency, deficient > C1 esterase inhibitor
- Edema, edematous > angioneurotic > hereditary
Showing 40 of 44 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| D84.0 | Lymphocyte function antigen-1 [LFA-1] defect | Valid |
| D84.8 | Other specified immunodeficiencies | Not billable |
| D84.9 | Immunodeficiency, unspecified | Valid |