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{
"id" : "extension_bek",
"algorithm" : "cs",
"version" : "02.05.50",
"name" : "Extension",
"title" : "CS Extension",
"notes" : "**Note 1**: AJCC does not include a Tis or TX category for melanoma of mucosa of head and neck sites. CS Extension codes of 000 and 999 are mapped to NA and AJCC stage group is derived as NA.\n\n**Note 2**: AJCC does not include a T1 or T2 category for mucosal melanoma of head and neck sites.\n\n**Note 3**: Use codes 405, 415, 425, 430, 505, 510, and 515 for extension involving the mucosa only of adjacent sites. Use higher codes for extension involving deeper tissues of the primary or adjacent sites.\n\n**Note 4**: Use code 300 for localized tumor only if no information is available to assign code 105 or 205, 520, or 540.\n\n**Note 5**: Use code 520, 705, 810, or 815 if the physician's assignment of T category is the only information available about the extent of the tumor.",
"last_modified" : "2015-05-27T16:19:11.897Z",
"definition" : [ {
"key" : "extension",
"name" : "Code",
"type" : "INPUT"
}, {
"key" : "description",
"name" : "Description",
"type" : "DESCRIPTION"
}, {
"key" : "ajcc7_t",
"name" : "AJCC 7 T",
"type" : "ENDPOINT"
}, {
"key" : "ajcc6_t",
"name" : "AJCC 6 T",
"type" : "ENDPOINT"
}, {
"key" : "t77",
"name" : "Summary Stage 1977 T",
"type" : "ENDPOINT"
}, {
"key" : "t2000",
"name" : "Summary Stage 2000 T",
"type" : "ENDPOINT"
} ],
"rows" : [ [ "000", "In situ, intraepithelial, noninvasive", "VALUE:NA", "VALUE:NA", "VALUE:IS", "VALUE:IS" ], [ "100", "OBSOLETE DATA RETAINED V0200\n\nInvasive tumor confined to one of the following subsites:\n Anterior wall (including vallecula and lingual (anterior) surface of epiglottis)\n One lateral wall\n Posterior wall", "ERROR:", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "105", "Tumor confined to mucosa of one of the following subsites:\n Anterior wall: \n Lingual (anterior surface of epiglottis)\n Vallecula \n One lateral wall\n Posterior wall", "VALUE:T3", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "200", "OBSOLETE DATA RETAINED V0200\n\nInvolvement of two or more subsites:\n Posterior, anterior or lateral wall(s)", "ERROR:", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "205", "Involvement of mucosa only of two or more subsites: \n Anterior wall:\n Lingual (anterior) surface of epiglottis\n Vallecula\n Lateral wall(s)\n Posterior wall", "VALUE:T3", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "300", "Localized, NOS", "VALUE:T3", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "400", "OBSOLETE DATA RETAINED V0200\n\nSoft palate, inferior surface including uvula, or soft palate, NOS", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "405", "Involvement of mucosa only: \n Soft palate, inferior surface, including uvula\n Soft palate, NOS", "VALUE:T3", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "410", "OBSOLETE DATA RETAINED V0200\n\nHypopharynx NOS\nPyriform sinus", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "415", "Involvement of mucosa only: \n Hypopharynx, NOS\n Pyriform sinus", "VALUE:T3", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "420", "OBSOLETE DATA RETAINED V0200\n\nSoft palate, superior (nasopharyngeal) surface", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "425", "Involvement of mucosa only of soft palate, superior (nasopharyngeal) surface", "VALUE:T3", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "430", "Involvement of mucosa only:\n Nasopharynx \n Larynx\n Posterior surface of epiglottis", "VALUE:T3", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "500", "OBSOLETE DATA RETAINED V0200\n\nBase of tongue\nBuccal mucosa (inner cheek)\nFloor of mouth\nGum (gingiva)", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "505", "Involvement of mucosa only: \n Base of tongue\n Buccal mucosa (inner cheek)\n Floor of mouth\n Gum (gingiva)", "VALUE:T3", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "510", "Involvement of mucosa only of both lateral walls through soft palate or base of tongue", "VALUE:T3", "VALUE:NA", "VALUE:D", "VALUE:RE" ], [ "515", "Involvement of mucosa only: \n Anterior two-thirds of tongue\n Hard palate", "VALUE:T3", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "520", "Stated as T3 with no other information on extension", "VALUE:T3", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "540", "Involvement of deep soft tissue or musculature of any structure in code 105", "VALUE:T4a", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "545", "540 + (405, 415, 425, 430, or 505)\n\nInvolvement of deep soft tissue or musculature of any structure in code 105 plus mucosal involvement of any structure in code 405, 415, 425, 430, or 505", "VALUE:T4a", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "550", "Any extension coded in 105 - 505 \nWITH fixation", "VALUE:T4a", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "555", "Involvement of deep soft tissue or musculature of any structure in codes 405, 415, 425, 430, and 505", "VALUE:T4a", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "560", "(540 - 555) + 510\n\nAny involvement in codes 540 - 555 plus mucosal involvement of the structures in code 510", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:RE" ], [ "565", "(540 - 560) + 515\n\nAny involvement in codes 540 - 560 plus mucosal involvement of hard palate", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "570", "Involvement of deep soft tissue or musculature of both lateral walls, soft palate, or base of tongue with contiguous involvement through all four sites", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:RE" ], [ "575", "570 + 515\n\nInvolvement in 570 plus mucosal involvement of anterior tongue or hard palate ", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "600", "OBSOLETE DATA RETAINED V0200\n\nPrevertebral fascia or muscle\nSoft tissue of neck", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "610", "Soft tissue of neck, NOS", "VALUE:T4a", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "620", "OBSOLETE DATA RETAINED V0200\n\nNasopharynx, lateral, or NOS", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "650", "OBSOLETE DATA RETAINED V0200\n\nLarynx, NOS\nMedial pterygoid muscle, or pterygoid muscle, NOS\nPosterior surface of epiglottis", "ERROR:", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "670", "Maxilla\nMaxillary sinus (antrum)\nNasal cavity\nMedial pterygoid muscle, \nPterygoid muscle, NOS", "VALUE:T4a", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "675", "(610 or 670) + (510, 560, or 570)\n\nInvolvement of any structure in codes 610 or 670 plus any involvement of both lateral walls through soft palate or base of tongue", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:RE" ], [ "678", "(610,670, or 675) + (515, 565, 575)\n\nInvolvement of any structure in codes 610, 670, and 675 plus mucosal involvement of anterior tongue or hard palate", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "680", "Deep extrinsic muscles of tongue: \n Genioglossus\n Geniohyoid\n Hyoglossus\n Mylohyoid\n Palatoglossus\n Styloglossus\nParotid Gland", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "685", "Deep soft tissue or musculature of anterior tongue\nDeep tissue or periosteum of hard palate", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "690", "Bone excluding base of skull\nLateral pterygoid muscle\nOverlying skin\nPalatine bone\nPterygoid plates\nCartilage, NOS\nBone, NOS", "VALUE:T4a", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "700", "OBSOLETE DATA RETAINED V0200\n\nDeep extrinsic muscles of tongue: \n Genioglossus\n Geniohyoid\n Hyoglossus\n Mylohyoid\n Palatoglossus\n Styloglossus\nHard palate\nMandible", "ERROR:", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "705", "Stated as T4a with no other information on extension", "VALUE:T4a", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "710", "Prevertebral fascia/muscle", "VALUE:T4b", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "715", "710 + (510, 560, 670, 675, or 678) \n\nPrevertebral fascia/muscle plus any involvement of both lateral walls through soft palate or base of tongue", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:RE" ], [ "718", "710 + (515, 565, 575, 680, 685, or 690) \n\nPrevertebral fascia/muscle plus involvement of any structure in codes 680 and 690 or any involvement of anterior tongue or hard palate", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "720", "OBSOLETE DATA CONVERTED V0200\n \nSee code 690\nLateral pterygoid muscle\nPterygoid plates", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "750", "Base of skull\nBone of skull", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "760", "OBSOLETE DATA CONVERTED V0200\n\nSee code 690\nBone", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "770", "Carotid artery (encased)", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "790", "Contiguous extension:\n Mediastinal structures", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "800", "OBSOLETE DATA RETAINED V0200\n\nFurther contiguous extension:\n Anterior 2/3 of tongue\n Parotid gland", "ERROR:", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "801", "Further contiguous extension including:\n Brain\n Dura\n Lower cranial nerves (IX, X, XI, XII)\n Masticator space", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "810", "Stated as T4b with no other information on extension", "VALUE:T4b", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "815", "Stated as T4 [NOS] with no other information on extension", "VALUE:T4NOS", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "950", "OBSOLETE DATA RETAINED V0200\n\nNo evidence of primary tumor", "ERROR:", "VALUE:NA", "VALUE:U", "VALUE:U" ], [ "999", "Unknown; extension not stated\nPrimary tumor cannot be assessed\nNot documented in patient record", "VALUE:NA", "VALUE:NA", "VALUE:U", "VALUE:U" ] ]
}