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{
"id" : "extension_bfd",
"algorithm" : "cs",
"version" : "02.05.50",
"name" : "Extension",
"title" : "CS Extension",
"notes" : "**Note 1**: AJCC does not include a Tis category for gastrointestinal stromal tumors (GIST). Any case with a CS Extension code of 000 is mapped to TX for AJCC 7 stage and in situ Summary Stage. \n\n**Note 2**: Give priority to coding depth of invasion or spread outside the small intestine for tumor with intraluminal or lateral extension to adjacent segment(s) of small intestine.\n\n**Note 3**: The assignment of T categories for GISTs is based on tumor size. A physician's statement of the T category may be used to code CS Tumor Size and/or CS Extension if this is the only information in the medical record regarding one or both of these fields. However the two fields are coded independently: for example the record may document size but not extension, other than the physician's statement of the T category. Use codes 170, 210, 250, and 270 as appropriate to code CS Extension based on a statement of T when no other extension information is available.\n\n**Note 4**: Use code 150 only if GIST is described as arising in a polyp. Do not use this code for GIST described as arising in the wall of the appendix and extending into the lumen with a polypoid appearance.\n\n**Note 5**: Use code 300 for localized cases only if no information is available to assign a more specific code.",
"footnotes" : "- For CS Extension codes 100-800 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 7 Table for this site.",
"last_modified" : "2015-05-27T16:19:12.863Z",
"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:TX", "VALUE:NA", "VALUE:IS", "VALUE:IS" ], [ "050", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee code 000\n\n(Adeno)carcinoma in a polyp, noninvasive", "VALUE:TX", "VALUE:NA", "VALUE:IS", "VALUE:IS" ], [ "100", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee codes 155 and 165\n\nInvasive tumor confined to mucosa, NOS, including intramucosal, NOS", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "110", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee codes 155 and 165\n\nInvasion of lamina propria", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "120", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee code 155 and 165\n\nInvasion of muscularis mucosae", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "130", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee codes 155 and 165\n\nConfined to head of polyp", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "140", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee codes 155 and 165\n\nConfined to stalk of polyp", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "150", "Invasion of polyp, NOS", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "155", "Tumor confined to muscular wall", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "160", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee codes 155 and 165\n\nInvasion of submucosa (superficial invasion)", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "165", "Tumor invades through submucosa and muscularis mucosae to involve mucosa", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "170", "Stated as T1 with no other information on extension", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "200", "OBSOLETE DATA RETAINED AND REVIEWED V0203\nSee code 155 and 165\n\nMuscularis propria invaded", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "210", "Stated as T2 with no other information on extension", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "250", "Stated as T3 with no other information on extension", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "270", "Stated as T4 with no other information on extension", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "300", "Intraluminal spread to other segments of small intestine or cecum\n(See Note 2)\nLocalized, NOS", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "400", "Invasion through muscularis propria or muscularis, NOS\nExtension through wall, NOS\nSubserosal tissue/(sub) serosal fat invaded\nTransmural, NOS", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:L" ], [ "410", "OBSOLETE DATA CONVERTED V0203\nSee code 250\n\nStated as T3, NOS", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "420", "OBSOLETE DATA CONVERTED V0203\nSee code 458\n\nFat, NOS", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "450", "Adjacent connective tissue\nMesentery, including mesenteric fat, invaded less than or equal to 2 cm in depth or invaded, NOS\nNonperitonealized perimuscular tissue invaded less than or equal to 2 cm in depth or invaded, NOS\nRetroperitoneum invaded less than or equal to 2 cm in depth or NOS", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "458", "Fat, NOS", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "500", "Invasion of/through serosa (mesothelium) (tunica serosa) (visceral peritoneum)", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:L", "VALUE:RE" ], [ "550", "500 + (420 or 450)\n\nInvasion of/through serosa plus invasion of structures in codes 420 or 450", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "560", "Invasion of/through serosa with invasion of/through mucosa", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "600", "For duodenum primary only:\n Ampulla of Vater\n Diaphragm\n Extrahepatic bile duct(s)\n Gallbladder\n Pancreas\n Pancreatic duct", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "650", "For duodenum primary only:\n Blood vessel(s), major:\n Aorta\n Gastroduodenal artery\n Portal vein\n Renal vein\n Superior mesenteric artery or vein\n Vena cava\n Greater omentum\n Hepatic flexure\n Kidney, NOS\n Kidney, right\n Liver, NOS\n Liver, quadrate lobe\n Liver, right lobe\n Omentum, NOS\n Transverse colon\n Ureter, right\nFor jejunum or ileum primaries only:\n Colon, including appendix", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "660", "For duodenum primary only:\n Stomach", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "670", "Abdominal wall\nMesentery invaded greater than 2 cm in depth\nNon-peritonealized perimuscular tissue invaded greater than 2 cm in depth\nRetroperitoneum invaded greater than 2 cm in depth", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "680", "Other segments of the small intestine via serosa", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:RE", "VALUE:RE" ], [ "690", "OBSOLETE DATA CONVERTED V0203\nSee code 270\n\nStated as T4, NOS", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "700", "For jejunum or ileum primary only:\n Bladder\n Fallopian tube(s)\n Ovary(ies)\n Uterus", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "800", "Further contiguous extension", "JUMP:extension_size_ajcc7_xef", "VALUE:NA", "VALUE:D", "VALUE:D" ], [ "950", "No evidence of primary tumor", "VALUE:T0", "VALUE:NA", "VALUE:U", "VALUE:U" ], [ "999", "Unknown extension\nPrimary tumor cannot be assessed\nNot documented in patient record", "VALUE:TX", "VALUE:NA", "VALUE:U", "VALUE:U" ] ]
}