CS Site-Specific Factor 2

Retinoblastoma (RB) Gene Mutation

Notes

**Note**: Information is collected on the germline mutation of the retinoblastoma (RB) gene. Typically tumor tissue is tested to identify the presence of the mutation. Peripheral blood lymphocytes are tested to determine if the RB gene is a germline mutation (inherited). Code the results of testing as reported in the medical record.

Default

988

NAACCR Item

NAACCR #2890
Code Description
000 Germline retinoblastoma (RB) gene mutation not present
010 Germline RB gene mutation present
020 OBSOLETE DATA CONVERTED V0203
See code 000

Germline RB gene mutation not present
888 OBSOLETE DATA CONVERTED V0200
See code 988

Not applicable for this site
988 Not applicable: Information not collected for this case
(May include cases converted from code 888 used in CSv1 for "Not applicable" or when the item was not collected. If this item is required to derive T, N, M, or any stage, use of code 988 may result in an error.)
997 Test ordered, results not in chart
998 Test not done (test not ordered and not performed)
999 Unknown or no information
Not documented in patient record