CS Lymph Nodes

Notes

**Note 1**: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in the field CS Mets at DX.
Code Description AJCC 7 N TNM 6 N Summary Stage 1977 N Summary Stage 2000 N
000 No regional lymph node involvement N0 N0 NONE NONE
100 SINGLE regional lymph node:
Superficial inguinal (femoral) regional lymph node
Inguinal node, NOS (unknown if superficial or deep)

Stated as N1 with no other information on regional lymph nodes		 Lymph Node Extranodal Extension N1 RN RN
200 MULTIPLE or BILATERAL regional lymph nodes:
Superficial inguinal (femoral) regional lymph nodes
Inguinal nodes, NOS (unknown if superficial or deep)

Stated as N2 with no other information on regional lymph nodes		 Lymph Node Extranodal Extension N2 RN RN
250 Regional lymph nodes, not stated if single or multiple or bilateral:
Superficial inguinal (femoral) regional lymph nodes
Inguinal nodes, NOS (unknown if superficial or deep)		 Lymph Node Extranodal Extension N1 RN RN
260 SINGLE regional lymph nodes, NOS
Not stated if inguinal or pelvic		 Lymph Node Extranodal Extension N1 RN RN
270 MULTIPLE or BILATERAL regional lymph nodes, NOS:
Not stated if inguinal or pelvic		 Lymph Node Extranodal Extension N2 RN RN
300 OBSOLETE DATA RETAINED V0200
Deep inguinal node(s) reclassified in AJCC 7th Edition, see codes 310 and 350

Regional lymph node:
Deep inguinal, NOS:
Node of Cloquet or Rosenmuller (highest deep inguinal)		 ERROR: N3 RN RN
310 SINGLE regional node:
Deep inguinal, NOS:
Node of Cloquet or Rosenmuller (highest deep inguinal)		 Lymph Node Extranodal Extension N3 RN RN
350 MULTIPLE or BILATERAL regional nodes:
Deep inguinal, NOS:
Node of Cloquet or Rosenmuller (highest deep inguinal)		 Lymph Node Extranodal Extension N3 RN RN
370 OBSOLETE DATA REVIEWED V0203
See codes 250 and 380

Inguinal nodes, NOS (unknown if single, multiple, unilateral or bilateral)		 Lymph Node Extranodal Extension N1 RN RN
380 Regional lymph nodes, not stated if single, multiple or bilateral:
Deep inguinal, NOS:
Node of Cloquet or Rosenmuller (highest deep inguinal)		 Lymph Node Extranodal Extension N1 RN RN
400 Single, multiple, unilateral or bilateral regional nodes:
Pelvic lymph nodes, NOS:
External iliac
Internal iliac (hypogastric)
Obturator		 N3 N3 RN RN
450 Stated as N3 with no other information on regional lymph nodes N3 N3 RN RN
500 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 260, 270 and 505

Regional lymph node(s), NOS		 Lymph Node Extranodal Extension N1 RN RN
505 Regional lymph node(s), NOS:
Not stated if single or multiple
AND not stated if inguinal or pelvic		 Lymph Node Extranodal Extension N1 RN RN
800 Lymph nodes, NOS N1 N1 RN RN
999 Unknown; not stated
Regional lymph node(s) cannot be assessed
Not documented in patient record		 NX NX U U
- For CS Lymph nodes codes 100-270, 310-380, 500 and 505 ONLY, the N category for AJCC 7 staging is assigned based on the value of CS Site-Specific Factor 17, Extranodal Extension of Regional Lymph Nodes, as shown in the Lymph Node Extranodal Extension table for this schema.