CS Extension: Hard Palate

Code Description TNM SS77 SS2000
00 In situ; noninvasive; intraepithelial Tis IS IS
10 Invasive tumor on one side confined to mucoperiosteum (stroma) * L L
30 Localized, NOS * L L
40 Tumor crosses midline * L L
50
  • Buccal mucosa (inner cheek)
  • Gingiva, upper
  • Glossopalatine arch
  • Pharyngopalatine arch
  • Soft palate
  • Uvula
* RE RE
70
  • Maxillary bone
  • Palatine bone
T4a RE RE
74
  • Deep muscle of tongue
  • Floor of nose
  • Maxillary antrum (sinus)
  • Nasal cavity
  • Nasopharynx
  • Skin of face
  • Sphenoid bone
T4a D D
76 Pterygoid plate T4b D D
80 Further contiguous extension T4b D D
95 No evidence of primary tumor T0 U U
99
  • Unknown extension
  • Primary tumor cannot be assessed
  • Not documented in patient record
TX U U

* For Extension codes 10, 30, 40, and 50 ONLY, the T category is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this site.

Close Window