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        Item #
        Length
        Source of Standard
        Year Implemented
        Version Implemented
        Year Retired
        Version Retired
        Column #
    
    
        3931
        1
        NAACCR
        2018
        18
        
        
        1918 - 1918
    



NAACCR XML: Tumor.serumBeta2MicroglobulinPretxLvl




Description
Serum Beta-2 Microglobulin is a protein that is found on the surface of many cells and plentiful on the surface of white blood cells. Increased production or destruction of these cells causes Serum β2 (beta-2) Microglobulin level to increase. Elevated Serum β2 (beta-2) Microglobulin level is a prognostic factor for plasma cell myeloma.
Rationale
Serum Beta-2 Microglobulin Pretreatment Level is a prognostic factor required in AJCC 8th edition, Chapter 82


    Plasma Cell Myeloma and Plasma Cell Disorders, for staging of plasma cell myeloma. It is a new data item for cases diagnosed 1/1/2018+.

Codes

    
        
            0
            ß2-microglobulin <3.5 mg/L
        
        
            1
            ß2-microglobulin =3.5 mg/L <5.5 mg/L
        
        
            2
            ß2-microglobulin =5.5 mg/L
        
        
            7
            Test ordered, results not in chart
        
        
            9
            Not documented in medical record


                Serum Beta-2 Microglobulin Pretreatment Level not assessed or unknown if assessed
            
        
        
            
            
        
    

Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.

0	ß2-microglobulin <3.5 mg/L
1	ß2-microglobulin =3.5 mg/L <5.5 mg/L
2	ß2-microglobulin =5.5 mg/L
7	Test ordered, results not in chart
9	Not documented in medical record Serum Beta-2 Microglobulin Pretreatment Level not assessed or unknown if assessed