The new ICD-10 insurance codes for Mast Cell Disorders have been released. A few are listed below. 

D8940 Mast cell activation, unspecified

D8941 Monoclonal mast cell activation syndrome

D8942 Idiopathic mast cell activation syndrome

D8943 Secondary mast cell activation

D8949 Other mast cell activation disorder

Q822 Mastocytosis

To read more, go to – ftp://ftp.cdc.gov/pub/Health_Statistics/NCHS/Publications/ICD10CM/2017/icd10cm_codes_2017.txt