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{
"id" : "extension_bax",
"algorithm" : "cs",
"version" : "02.05.50",
"name" : "Extension",
"title" : "CS Extension",
"notes" : "**Note 1**: Involvement of or extension to bone ncludes any type of tumor extension to the bone, such as erosion, invasion, extension, penetration, or destruction.\n\n**Note 2**: Use code 300 for localized tumor only if no information is available to assign code 100.\n\n**Note 3**: Code Base of skull, NOS only if no information available to code to more specific bony structures in skull.\n\n**Note 4**: Use code 665, 685, 810, or 815 if the physician's assignment of T category is the only information available about the extent of the tumor.",
"last_modified" : "2015-05-27T16:19:06.798Z",
"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:Tis", "VALUE:Tis", "VALUE:IS", "VALUE:IS" ], [ "100", "Invasive tumor confined to mucosa of maxillary sinus (antrum) \nWITHOUT erosion or destruction of bone\n\nStated as T1 with no other information on extension", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "300", "Localized, NOS", "VALUE:T1", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "400", "Tumor causing bone erosion or destruction \nEXCLUDING extension to:\n Posterior wall of maxillary sinus (see code 600)\n Pterygoid plates (see code 680)\nINCLUDING:\n Palatine bone, hard palate \n Middle nasal meatus \n Nasal cavity (floor, lateral wall, septum, turbinates)\n\nStated as T2 with no other information on extension", "VALUE:T2", "VALUE:T2", "VALUE:RE", "VALUE:RE" ], [ "600", "Ethmoid sinus, anterior\nFloor or medial wall of orbit\nFloor or posterior wall of maxillary sinus\nMaxilla, NOS\nSubcutaneous tissues", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "650", "OBSOLETE DATA CONVERTED V0200\nSee code 600\n\nBone of the posterior wall of maxillary sinus\nInvasion of maxilla, NOS", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "660", "Ethmoid sinus, posterior\nEthmoid sinus, NOS\nPterygoid fossa", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "665", "Stated as T3 with no other information on extension", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "675", "Base of skull, NOS", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "680", "Anterior orbital contents\nSkin of cheek\nPterygoid plates\nInfratemporal fossa\nCribriform plate\nSphenoid sinus\nFrontal sinus", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "685", "Stated as T4a with no other information on extension", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "700", "OBSOLETE DATA REVIEWED AND CHANGED V0203\nRecode involved structures to code 675, 680, or 710 as appropriate\n\nBase of skull\nOrbital contents including eye\nPterygomaxillary or temporal fossa\nSoft palate", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "710", "Pterygomaxillary fossa\nTemporal fossa\nSoft palate", "VALUE:T4b", "VALUE:T4b", "VALUE:RE", "VALUE:RE" ], [ "750", "Further contiguous extension including:\n Brain\n Clivus\n Cranial nerves (other than V2, maxillary division of trigeminal nerve)\n Dura\n Middle cranial fossa\n Nasopharynx\n Orbital apex", "VALUE:T4b", "VALUE:T4b", "VALUE:RE", "VALUE:RE" ], [ "800", "Further contiguous extension", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "810", "Stated as T4b with no other information on extension", "VALUE:T4b", "VALUE:T4b", "VALUE:RE", "VALUE:RE" ], [ "815", "Stated as T4 [NOS] with no other information on extension", "VALUE:T4NOS", "VALUE:T4NOS", "VALUE:RE", "VALUE:RE" ], [ "950", "No evidence of primary tumor", "VALUE:T0", "VALUE:T0", "VALUE:U", "VALUE:U" ], [ "999", "Unknown; extension not stated\nPrimary tumor cannot be assessed\nNot documented in patient record", "VALUE:TX", "VALUE:TX", "VALUE:U", "VALUE:U" ] ]
}
