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.
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 |
| 5 |
Schema Discriminator 1: Plasma Cell Myeloma Terminology coded to 1 or 9 |
| 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
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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.