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{
"id" : "extension_bfo",
"algorithm" : "cs",
"version" : "02.05.50",
"name" : "Extension",
"title" : "CS Extension",
"notes" : "**Note 1**: AJCC does not include a Tis category for Neuroendocrine Tumors (NET) of the ampulla of Vater. Extension code 000 is mapped to TX for AJCC stage and in situ Summary Stage.\n\n**Note 2**: The assignment of the T1 and T2 categories for NETs of ampulla of Vater is based on tumor size. A physician's statement of the T category may be used to code both 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. Use codes 310, 430, 600, and 810 as appropriate to code CS Extension based on a statement of T when no other extension information is available.\n\n**Note 3**: Use code 300 for localized tumor only if no information is available to assign code 100 or 430.",
"footnotes" : "- For CS Extension codes 100-430 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 schema.",
"last_modified" : "2015-05-27T16:19:13.519Z",
"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:Tis", "VALUE:IS", "VALUE:IS" ], [ "100", "Invasive tumor confined/limited to ampulla of Vater or extending to sphincter of Oddi", "JUMP:extension_size_ajcc7_xfe", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "300", "Localized, NOS", "JUMP:extension_size_ajcc7_xfe", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "310", "Stated as T1 with no other information on extension", "JUMP:extension_size_ajcc7_xfe", "VALUE:T1", "VALUE:RE", "VALUE:RE" ], [ "420", "Duodenal wall", "JUMP:extension_size_ajcc7_xfe", "VALUE:T2", "VALUE:RE", "VALUE:RE" ], [ "430", "Stated as T2 with no other information on extension", "JUMP:extension_size_ajcc7_xfe", "VALUE:T1", "VALUE:L", "VALUE:L" ], [ "520", "Pancreas", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "550", "Retroperitoneum\nPeripancreatic soft tissues", "VALUE:T3", "VALUE:T3", "VALUE:D", "VALUE:D" ], [ "600", "Stated as T3 with no other information on extension", "VALUE:T3", "VALUE:T3", "VALUE:RE", "VALUE:RE" ], [ "610", "Visceral peritoneum (serosa)", "VALUE:T4", "VALUE:T4", "VALUE:RE", "VALUE:RE" ], [ "620", "Common bile duct", "VALUE:T4", "VALUE:T4", "VALUE:RE", "VALUE:RE" ], [ "650", "Extrahepatic bile ducts other than common bile duct or sphincter of Oddi", "VALUE:T4", "VALUE:T4", "VALUE:RE", "VALUE:RE" ], [ "700", "Extension to other adjacent organs or tissues:\n Blood vessels (major):\n Hepatic artery\n Portal vein\n Gallbladder\n Hepatic flexure\n Lesser omentum\n Liver including porta hepatis\n Stomach, NOS:\n Distal\n Transverse colon", "VALUE:T4", "VALUE:T4", "VALUE:RE", "VALUE:RE" ], [ "750", "Stomach, proximal", "VALUE:T4", "VALUE:T4", "VALUE:RE", "VALUE:D" ], [ "760", "(620 to 750) + 550", "VALUE:T4", "VALUE:T4", "VALUE:D", "VALUE:D" ], [ "780", "OBSOLETE DATA CONVERTED V0203\nSee code 810\n\nStated as T4, NOS", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "800", "Further contiguous extension:\n Other adjacent organs", "VALUE:T4", "VALUE:T4", "VALUE:D", "VALUE:D" ], [ "810", "Stated as T4 with no other information on extension", "VALUE:T4", "VALUE:T4", "VALUE:RE", "VALUE:RE" ], [ "950", "No evidence of primary tumor", "VALUE:T0", "VALUE:T0", "VALUE:U", "VALUE:U" ], [ "999", "Unknown extension\nPrimary tumor cannot be assessed\nNot documented in patient record", "VALUE:TX", "VALUE:TX", "VALUE:U", "VALUE:U" ] ]
}