CS Site-Specific Factor 25

Schema Discriminator: Nasopharynx/PharyngealTonsil

Notes

**Note**: For cases coded to primary site code C11.1 (Posterior wall of nasopharynx), code the specific site in which the tumor arose.
Code Description Schema
010 Posterior wall of nasopharynx
Posterior wall of nasopharynx, NOS
nasopharynx
020 Adenoid
Pharyngeal tonsil
Nasopharyngeal tonsil
pharyngeal_tonsil
100 OBSOLETE DATA RETAINED V0200

C11.1 - originally coded in CSv1 and case diagnosed before 1/1/2010
nasopharynx
981 Nasopharynx cases coded to C11.0, C11.2, C11.3, C11.8, C11.9
Note: May include cases which were converted to this code from a blank
nasopharynx