ICD-10-CM › D50-D89 › D80-D89 › D89 Other disorders involving the... › D89.4
D89.4
Mast cell activation syndrome and related disorders
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 6 more specific codes instead:
What has happened to this code
Every change the publisher made, from 2017 to now.
- FY2017 Added to the code set Mast cell activation syndrome and related disorders
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 D89 Other disorders involving the immune mechanism, not elsewhere classified
Excludes1 - never coded here
- hyperglobulinemia NOS (R77.1)
- monoclonal gammopathy (of undetermined significance) (D47.2)
Excludes2 - not included here
- transplant failure and rejection (T86.-)
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
Codes in the same group
| Code | Description | Status |
|---|---|---|
| D89.0 | Polyclonal hypergammaglobulinemia | Valid |
| D89.1 | Cryoglobulinemia | Valid |
| D89.2 | Hypergammaglobulinemia, unspecified | Valid |
| D89.3 | Immune reconstitution syndrome | Valid |
| D89.8 | Other specified disorders involving the immune mechanism, not elsewhere classified | Not billable |
| D89.9 | Disorder involving the immune mechanism, unspecified | Valid |