Collaborative Stage

Note 1: For head and neck schemas, this field includes all lymph nodes defined as Levels I-VII and Other by AJCC. The complete definitions are provided in the General Instructions.
Note 2: For head and neck schemas, additional information about lymph nodes (size of involved nodes, extracapsular extension, levels involved, and location of involved nodes above or below the lower border of the cricoid cartilage) is coded in Site-Specific Factors 1, 3-9.
Note 3: If laterality of lymph nodes is not specified, assume nodes are ipsilateral. Midline nodes are considered ipsilateral.
Note 4: For head and neck cancers, if lymph nodes are described only as "supraclavicular", try to determine if they are in Level IV (deep to the sternocleidomastoid muscle, in the lower jugular chain) or Level V (in the posterior triangle, inferior to the transverse cervical artery) and code appropriately. If the specific level cannot be determined, consider them as Level V nodes.
Note 5: The description of lymph nodes has been standardized across the head and neck schemas. All lymph node levels and groups listed here are considered regional nodes for AJCC staging. Summary Stage 1977 and Summary Stage 2000 divide these nodes into regional and distant groups.

^ For codes 105. 115. 125. 205, 215, 225, 305, 315, 325, 405, 415, 425, 505, 515, 525, and 800 ONLY, the N category for AJCC 7th Edition staging is assigned based on the value of Site-Specific Factor 1, Size of Lymph Nodes, using the extra table, Lymph Nodes Size Table CSv2for this schema.
* For codes 100-125, 200-225, 300-325, 400-425, 500-525, and 800 ONLY, the N category for AJCC 6th Edition staging is assigned based on the value of Site-Specific Factor 1, Size of Lymph Nodes, using the extra table, Lymph Nodes Size Table CSv2 for this schema.
**For OBSOLETE codes 100, 110, 120, 200, 210, 220, 300, 310, 320, 400, 410, 420, 500, 510, 520, and 750 ONLY, the N category for AJCC 6th Edition staging for cases collected in CSv1 is assigned based on the value of Site-Specific Factor 1, Size of Lymph Nodes, using the extra table, Lymph Nodes Size Table CSv1, for this schema.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	None; no regional lymph node involvement	N0	N0	NONE	NONE
100	OBSOLETE DATA RETAINED V0200 Single positive ipsilateral regional node: Level II node Jugulodigastric (subdigastric) Upper deep cervical Upper jugular Level III node Middle deep cervical Mid jugular Level IV node Lower deep cervical Lower jugular Retropharyngeal Cervical, NOS Deep cervical, NOS Internal jugular, NOS Mandibular Regional lymph node, NOS	ERROR	**	RN	RN
105	Single positive ipsilateral regional node: Level II node - Upper jugular Jugulodigastric (subdigastric) Upper deep cervical Other groups Retropharyngeal Cervical, NOS Deep cervical, NOS Internal jugular, NOS Regional lymph node, NOS	^	*	RN	RN
110	OBSOLETE DATA RETAINED V0200 Single positive ipsilateral regional node: Level I node Submandibular (submaxillary) Submental	ERROR	**	D	RN
115	Single positive ipsilateral regional node: Level I node Level IA - Submental Level IB - Submandibular (submaxillary), sublingual Level VA - Spinal accessory	^	*	D	RN
120	OBSOLETE DATA RETAINED V0200 Single positive ipsilateral regional node: Level V node Posterior cervical Posterior triangle (spinal accessory and transverse cervical) (upper, middle, and lower corresponding to the levels that define upper, middle, and lower jugular nodes) Level VI node Anterior deep cervical Laterotracheal Paralaryngeal Paratracheal Prelaryngeal Pretracheal Recurrent laryngeal Level VII node Upper mediastinum (for other mediastinal nodes see CS Mets at DX) Other groups Intraparotid Parapharyngeal Periparotid Retropharyngeal Sub-occipital Supraclavicular fossa	ERROR	**	D	D
125	Single positive ipsilateral regional node: Level III node - Middle jugular Middle deep cervical Level IV node - Lower jugular Lower deep cervical Virchow node Level V node - Posterior triangle group Posterior cervical Level VB - Transverse cervical, supraclavicular (see Note 4) Level VI node - Anterior compartment group Laterotracheal Paralaryngeal Paratracheal - above suprasternal notch Perithyroidal Precricoid (Delphian) Prelaryngeal Pretracheal - above suprasternal notch Recurrent laryngeal Level VII node - Superior mediastinal group (for other mediastinal nodes see CS Mets at DX) Esophageal groove Paratracheal - below suprasternal notch Pretracheal - below suprasternal notch Other groups: Facial: Buccinator (buccal) Mandibular Nasolabial Parotid: Infraauricular Intraparotid Periparotid Preauricular Parapharyngeal Retroauricular(mastoid) Suboccipital	^	*	D	D
180	Stated as N1, no other information	N1	N1	RN	RN
190	Stated as N2a, no other information	N2a	N2a	RN	RN
200	OBSOLETE DATA RETAINED V0200 Multiple positive ipsilateral nodes listed in code 100	ERROR	**	RN	RN
205	Multiple positive ipsilateral nodes listed in code 105	^	*	RN	RN
210	OBSOLETE DATA RETAINED V0200 Multiple positive ipsilateral nodes listed in code 110	ERROR	**	RN	RN
215	Multiple positive ipsilateral nodes any listed in code 115 (WITH or WITHOUT nodes listed in code 105)	^	*	D	RN
220	OBSOLETE DATA RETAINED V0200 Multiple positive ipsilateral nodes listed in code 120	ERROR	**	D	D
225	Multiple positive ipsilateral nodes any listed in code 125 (WITH or WITHOUT nodes listed in code 105 or 115)	^	*	D	D
290	Stated as N2b, no other information	N2b	N2b	D	D
300	OBSOLETE DATA RETAINED V0200 Regional lymph nodes as listed in code 100: Positive ipsilateral node(s), not stated if single or multiple	ERROR	**	RN	RN
305	Regional lymph nodes as listed in code 105: Positive ipsilateral node(s), not stated if single or multiple	^	*	RN	RN
310	OBSOLETE DATA RETAINED V0200 Regional lymph nodes as listed in code 110: Positive ipsilateral node(s), not stated if single or multiple	ERROR	**	D	RN
315	Regional lymph nodes as listed in code 115: Positive ipsilateral node(s), not stated if single or multiple	^	*	D	RN
320	OBSOLETE DATA RETAINED V0200 Regional lymph nodes as listed in code 120: Positive ipsilateral node(s), not stated if single or multiple	ERROR	**	D	D
325	Regional lymph nodes as listed in code 125: Positive ipsilateral node(s), not stated if single or multiple	^	*	D	D
400	OBSOLETE DATA RETAINED V0200 Regional lymph nodes listed in code 100: Positive bilateral nodes	ERROR	**	RN	RN
405	Regional lymph nodes as listed in code 105: Positive bilateral or contralateral nodes	^	*	RN	RN
410	OBSOLETE DATA RETAINED V0200 Regional lymph nodes listed in code 110: Positive bilateral nodes	ERROR	**	D	RN
415	Regional lymph nodes any listed in code 115: Positive bilateral or contralateral nodes (WITH or WITHOUT nodes listed in code 105)	^	*	D	RN
420	OBSOLETE DATA RETAINED V0200 Regional lymph nodes listed in code 120: Positive bilateral nodes	ERROR	**	D	D
425	Regional lymph nodes any listed in code 125: Positive bilateral or contralateral nodes (WITH or WITHOUT nodes listed in code 105 or 115)	^	*	D	D
490	Stated as N2c, no other information	N2c	N2c	RN	RN
500	OBSOLETE DATA RETAINED V0200 Regional lymph nodes listed in code 100: Positive node(s), not stated if unilateral, or bilateral	ERROR	**	RN	RN
505	Regional lymph nodes as listed in code 105: Positive node(s), not stated if ipsilateral, or bilateral, or contralateral, AND not stated if single or multiple	^	*	RN	RN
510	OBSOLETE DATA RETAINED V0200 Regional lymph nodes as listed in code 110: Positive node(s), not stated if unilateral, or bilateral	ERROR	**	D	RN
515	Regional lymph nodes as listed in code 115: Positive node(s), not stated if ipsilateral, or bilateral, or contralateral, AND not stated if single or multiple	^	*	D	RN
520	OBSOLETE DATA RETAINED V0200 Regional lymph nodes as listed in code 120: Positive node(s), not stated if unilateral or bilateral	ERROR	**	D	D
525	Regional lymph nodes as listed in code 125: Positive node(s), not stated if ipsilateral, or bilateral, or contralateral, AND not stated if single or multiple	^	*	D	D
600	Stated as N2, NOS	N2NOS	N2NOS	RN	RN
700	Stated as N3, no other information	N3	N3	RN	RN
750	OBSOLETE DATA RETAINED V0200 Regional lymph nodes in the supraclavicular fossa Inferior deep cervical (scalene) Spinal accessory (posterior cervical) Supraclavicular (transverse cervical) (See Note 4)	ERROR	**	D	D
800	Lymph nodes, NOS, no other information	^	*	RN	RN
999	Unknown; not stated Regional lymph node(s) cannot be assessed Not documented in patient record	NX	NX	U	U

PharyngealTonsil

CS Lymph Nodes