Organization

Field Name

ID

Required

KCR

Serum Beta-2 Microglobulin Pretreatment Leve

34119

yes 

SEER

Serum Beta-2 Microglobulin Pretreatment Level

3931

yes 

Note 1 Serum microglobulin is part of the Revised International Staging (RISS). Use the cut points listed in the table below regardless of the lab's reference range.

Note 2 Record this data item based on a blood test performed at diagnosis (pre-treatment). In the absence of the lab test, a physician's statement of the exact value can be used. Use the highest value available.

Note 3 If there is no mention of the serum beta-2 microglobulin, code 9.

Note 4 If Schema Discriminator 1 Plasma Cell Myeloma Terminology is coded to 1 or 9, code 5.

Code

Description

0

β2-microglobulin < 3.5 mg/L

1

β2-microglobulin ≥ 3.5 mg/L < 5.5 mg/L

2

β2-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