]> C70.0 Cerebral meninges C71.0 Cerebrum C71.1 Frontal lobe C71.2 Temporal lobe C71.3 Parietal lobe C71.4 Occipital lobe C71.5 Ventricle, NOS C71.6 Cerebellum, NOS C71.7 Brain stem C71.8 Overlapping lesion of brain C71.9 Brain, NOS Note 1: This schema is compatible with the AJCC 4th edition TNM scheme for brain, updated to include metastatic and site-specific information from the AJCC 7th edition. The AJCC opted not to recommend a TNM scheme in the 6th or 7th editions. Note 2: AJCC does not define TNM staging for this site. &generalsize; CS Extension Note 2: If discontiguous spread is limited to circulating cells in cerebrospinal fluid (CSF), use code 710 in CS Extension. Code all other discontiguous spread in CS Mets at DX. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 050 Benign or borderline brain tumor NA NA NA NA 100 NA NA L L 110 NA NA L L 120 NA NA L L 150 NA NA L L 200 NA NA L L 300 NA NA L L 400 NA NA RNOS RNOS 500 NA NA RNOS RNOS 510 NA NA RNOS RNOS 600 NA NA RNOS RNOS 700 NA NA D D 710 Circulating cells in cerebral spinal fluid (CSF) NA NA D D 750 NA NA D D 800 Further contiguous extension NA NA D D 950 No evidence of primary tumor NA NA U U 999 NA NA U U ¬appcsextevalnontnm; ¬applymphnodes; ¬appcsregnodesevalnontnm; ¬appreglnpos; ¬appreglnexam; CS Mets at DX Note 1: According to AJCC, p. 594: "Tumors affecting the central nervous system rarely develop extraneural metastases, probably because of inherent biologic characteristics of these tumors, and also because the brain does not have a well-developed drainage system. . . . Certain tumors do spread through cerebrospinal fluid (CSF) pathways, and such spread has a major impact on survival." Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 00 No distant metastasis NA NA NONE NONE 10 NA NA D D 20 NA NA D D 30 NA NA D D 50 NA NA D D 85 ERROR ERROR ERROR ERROR 99 NA NA U U ¬appcsmetsevalnontnm; &commonssf1braincnsoth; &commonssf2braincnsoth; &commonssf3braincnsoth; &commonssf4braincnsoth; &commonssf5braincnsoth; &commonssf6braincnsoth; &commonssf7braincnsoth; &commonssf8braincnsoth; ¬appnewssf9; ¬appnewssf10; ¬appnewssf11; ¬appnewssf12; ¬appnewssf13; ¬appnewssf14; ¬appnewssf15; ¬appnewssf16; ¬appnewssf17; ¬appnewssf18; ¬appnewssf19; ¬appnewssf20; ¬appnewssf21; ¬appnewssf22; ¬appnewssf23; ¬appnewssf24; ¬appnewssf25; &commonhistinclusionbraincnsoth; ¬appajcchistologies; ¬appcsstagetnm7; ¬appcsstage; &commonsummarystage;