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{
  "id" : "extension_bdm",
  "algorithm" : "cs",
  "version" : "02.05.50",
  "name" : "Extension",
  "title" : "CS Extension",
  "notes" : "**Note 1**:  Superficial erosion alone of bone/tooth socket by gingival primary is not sufficient to code as bone involvement (code 700).\n\n**Note 2**:  Periosteum is a fibrous membrane that wraps the outer surface of bones. Mucoperiosteum is a compound structure of muccous membrane and periosteum. 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 3**:  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 4**:  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 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 405, 410, 415, 775, 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 5**:  Use code 300 for localized tumor only if no information is available to assign code 100, 405, 410, or 415.",
  "footnotes" : "- For CS Extension codes 100-650  ONLY, the T category for AJCC 7staging 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 100-650  ONLY, the T category for AJCC 6 Edition staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this schema.",
  "last_modified" : "2015-05-27T16:19:10.702Z",
  "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 situintraepithelial, noninvasive", "VALUE:Tis", "VALUE:Tis", "VALUE:IS", "VALUE:IS" ], [ "100", "Invasive tumor confined to lamina propria (mucoperiosteum) (stroma)", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:L", "VALUE:L" ], [ "300", "Localized, NOS", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:L", "VALUE:L" ], [ "405", "Stated as T1 with no other information on extension", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:L", "VALUE:L" ], [ "410", "Stated as T2 with no other information on extension", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:L", "VALUE:L" ], [ "415", "Stated as T3 with no other information on extension", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:L", "VALUE:L" ], [ "500", "OBSOLETE DATA REVIEWED AND CHANGED V0203\nCode 500 defined as \"Buccal mucosa (inner cheek), Floor of mouth, Labial mucosa (inner lip), lip, Tongue\" in Csv1.  Code 500 defined as \"Buccal mucosa (inner cheek), Floor of mouth, Labial mucosa (inner lip), upper lip, Labial mucosa (inner lip), lip, NOS\" in CSv2: V0201, V0202.  All cases should be reviewed and recoded to 510, 780, or 785 as appropriate.\n\nBuccal mucosa (inner cheek)\nFloor of mouth\nLabial mucosa (inner lip), upper lip\nLabial mucosa (inner lip), lip , NOS", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "510", "Buccal mucosa (inner cheek)\nFloor of mouth\nLabial mucosa (inner lip), upper lip\nLabial mucosa (inner lip), lip , NOS", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:RE", "VALUE:RE" ], [ "535", "Cortical bone of maxilla\nMaxilla , NOS\nCortical bone, NOS (not specified in higher codes)\nBone , NOS (not specified in higher codes)", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:RE", "VALUE:RE" ], [ "550", "Facial muscle, NOS\nSubcutaneous soft tissue of face", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:RE", "VALUE:RE" ], [ "600", "Lateral pharyngeal wall \nTonsillar pillars and fossae  \nTonsils", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:RE", "VALUE:RE" ], [ "650", "Hard palate including cortical palatine bone\nSoft palate including uvula", "JUMP:extension_size_xpb", "JUMP:extension_size_xpb", "VALUE:RE", "VALUE:RE" ], [ "700", "OBSOLETE DATA REVIEWED AND CHANGED V0203\nCode 700 defined as \"Maxilla\" in CSv1.  All CSv1 cases should be reviewed and recoded to 535 or 725 as appropriate.\n\nMaxilla", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "720", "Deep (extrinsic) muscle of tongue:\n    Genioglossus\n    Hyoglossus\n    Palatoglossus\n    Styloglossus", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "725", "Trabecular bone of maxilla or palatine bone", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "740", "Maxillary (sinus) antrum \nNasal cavity", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "760", "Skin of face", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "770", "Bone of mandible \nMandible, NOS", "VALUE:T4a", "VALUE:T4a", "VALUE:D", "VALUE:D" ], [ "775", "Stated as T4a with no other information on extension", "VALUE:T4a", "VALUE:T4a", "VALUE:RE", "VALUE:RE" ], [ "780", "Labial mucosa (inner lip), lower lip", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:RE" ], [ "785", "780 + (740, 760, or 770) \n\nMucosa lower lip plus any structure in code 740, 760, or 770", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "788", "Specified bone\n(Other than maxilla, mandible, and bones in codes 795 and 805)", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "790", "OBSOLETE DATA CONVERTED V0200\nSee code 805\n\nSkull", "ERROR:", "ERROR:", "ERROR:", "ERROR:" ], [ "795", "Masticator space\nPterygoid plates", "VALUE:T4b", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "800", "OBSOLETE DATA RETAINED V0200\n\nFurther contiguous extension, including:\n   Masticator  space\n    Pterygoid plates\n    Skull base\n    Encases internal  carotid artery ", "ERROR:", "VALUE:T4b", "VALUE:D", "VALUE:D" ], [ "805", "Further contiguous extension, including:\n    Skull\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" ] ]
}




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