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{
"id" : "extension_bab",
"algorithm" : "cs",
"version" : "02.05.50",
"name" : "Extension",
"title" : "CS Extension",
"notes" : "**Note 1**: Periosteum is a fibrous membrane that wraps the outer surface of bones. Cortical bone is the dense compact outer layer of bone.Trabecular, cancellous, or spongy bone (spongiosa) is a porous network of tissue filling the interior of bone, decreasing weight and allowing room for blood vessels and marrow.\n\n**Note 2**: AJCC assigns the T category based on size when bone involvement is limited to the cortex. Involvement through cortical bone is required for assignment of T4a.\n\n**Note 3**: The assignment of T1, T2, and T3 categories for tumors of the lip and oral cavity is based on tumor size. A physician's statement of the T catgegory 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 405, 410, 415, 778, 810, or 815 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 300 for localized tumor only if no information is available to assign codes 100, 200, 405, 410, or 415.",
"footnotes" : "- For CS Extension codes 100 through 535 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this schema.\n- For CS Extension codes 100 through 535 ONLY, the T category for AJCC 6 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this schema.",
"last_modified" : "2015-05-27T16:19:05.494Z",
"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:\n Labial mucosa (inner lip)\n Lamina propria\n Multiple foci\n Submucosa (superficial invasion)\n Vermilion surface\nSuperficial extension to:\n Skin of lip\n Subcutaneous soft tissue of lip", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:L", "VALUE:L" ], [ "200", "Musculature", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:L", "VALUE:L" ], [ "300", "Localized, NOS", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:L", "VALUE:L" ], [ "405", "Stated as T1 with no other information on extension", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:L", "VALUE:L" ], [ "410", "Stated as T2 with no other information on extension", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:L", "VALUE:L" ], [ "415", "Stated as T3 with no other information on extension", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:L", "VALUE:L" ], [ "500", "Buccal mucosa (inner cheek)\nCommissure (from lower lip only)\nOpposite lip (both lips)", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:RE", "VALUE:RE" ], [ "510", "OBSOLETE DATA REVIEWED AND CHANGED V0203\nCode 510 defined as \"Gingiva\" in CSv1. Code 510 defined as \"Lower gingiva, Gingiva, NOS, Upper gingiva (from commissure only)\" in CSv2:V0201, V0202. All cases should be reviewed and recoded to 515, 780, or 785 as appropriate.\n\nLower gingiva\nGingiva, NOS\nUpper gingiva (from commissure only)", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "515", "Lower gingiva\nGingiva, NOS\nUpper gingiva (from commissure only)", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:RE", "VALUE:RE" ], [ "535", "Cortical bone of mandible\nMandible, NOS\nCortical bone of maxilla (from commissure only)\nMaxilla, NOS (from commissure only)\nCortical bone, NOS (not specified in higher codes)\nBone, NOS (not specified in higher codes)", "JUMP:extension_size_xpa", "JUMP:extension_size_xpa", "VALUE:RE", "VALUE:RE" ], [ "700", "OBSOLETE DATA REVIEWED AND CHANGED V0203\nCSv2 codes differentiate between involvement of cortical bone and trabecular bone. All CSv1 cases should be reviewed and recoded to 535 or 725 as appropriate.\n\nMandible", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "725", "Trabecular bone of mandible\nTrabecular bone of maxilla (from commissure only)", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "740", "Nose", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:D" ], [ "750", "Tongue", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "760", "Skin of face/neck", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "770", "OBSOLETE DATA REVIEWED AND CHANGED V0203\nCSv2 codes differentiate between involvement of cortical bone and trabecular bone. All CSv1 cases should be reviewed and recoded to 535, 775, 785, or 788 as appropriate.\n\nCortical bone (other than code 700)\nFloor of mouth\nInferior alveolar nerve", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "775", "Floor of mouth\nInferior alveolar nerve", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "778", "Stated as T4a with no other information on extension", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "780", "Upper gingiva (from lower lip)", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:RE" ], [ "785", "780 + (740, 750, 760, or 775)\n\nUpper gingiva plus any structure in code 740, 750, 760, or 775", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "788", "Bone of maxilla (from lower lip)\nMaxilla, NOS (from lower lip)\nSpecified bone \n(Other than mandible, maxilla from commissure, and bones in codes 790 and 800)", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "790", "Masticator space\nPterygoid plates", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "800", "Further contiguous extension including: \n Skull base \n Internal carotid artery (encased)", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "810", "Stated as T4b with no other information on extension", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "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" ] ]
}