Ill-Defined Other

Primary Site Histology Schema Discriminator 1
C420-C424, C761-C765, C767-C768, C770-C775, C778-C779 8000-8700, 8720-8790, 9700-9701
C760 8000-8700, 8720-8790, 9700-9701 0, 1
C809 8000-8180, 8191-8246, 8248-8700, 8720-8790, 9700-9701 <Any value>

Notes

C420-C424, C761-C765, C767-C768, C770-C775, C778-C779: 8000-8700, 8720-8790, 9700-9701 C809: 8000-8180, 8191-8246, 8248-8700, 8720-8790, 9700-9701 C760 and Schema Discriminator 1: Occult Head and Neck Lymph Nodes: 0, 1 (8000-8700, 8720-8790, 9700-9701) C760-C765, C767-C768, C809 C42 and C77, Other than Hematopoietic neoplasms (9590-9992) C420 Blood C421 Bone marrow C422 Spleen C423 Reticuloendothelial system, NOS C424 Hematopoietic system, NOS **Other and ill-defined sites of** C760 Head, face or neck, NOS C761 Thorax, NOS C762 Abdomen, NOS C763 Pelvis, NOS C764 Upper limb, NOS C765 Lower limb, NOS C767 Other ill-defined sites C768 Overlapping lesion of ill-defined sites **Lymph nodes of** C770 Lymph nodes of head, face and neck C771 Lymph nodes of intrathoracic C772 Lymph nodes of intra-abdominal C773 Lymph nodes of axilla or arm C774 Lymph nodes of inguinal region or leg C775 Lymph nodes of pelvis C778 Lymph nodes of multiple regions C779 Lymph nodes, NOS C809 Unknown primary site **Note 1:** The following sources were used in the development of this schema * SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998) (https://seer.cancer.gov/archive/manuals/EOD10Dig.3rd.pdf) * SEER Summary Staging Manual-2000: Codes and Coding Instructions (https://seer.cancer.gov/tools/ssm/ssm2000/) * Collaborative Stage Data Collection System, version 02.05: https://cancerstaging.org/cstage/Pages/default.aspx **Note 2:** *Schema Discriminator 1: Occult Head and Neck Lymph Nodes* is used to discriminate between Cervical Lymph Nodes and Unknown Primary Tumor of the Head and Neck, Ill-Defined Other and Soft Tissue Other when primary site is C760. **Note 3:** See the following schemas for the listed histologies * C760 (8000-8700, 8720-8790, 8941, 9700-9701: Schema Discriminator 1 Occult Head and Neck Lymph Nodes: 2, 3, 4, 5): *Cervical Lymph Nodes and Unknown Primary Tumors of the Head and Neck* * C760 (8941: Schema Discriminator 1 Occult Head and Neck Lymph Nodes: 0,1): *Soft Tissue Other* * C809 (8190, 8247): *Merkel Cell Skin* * 8710-8714, 8800-8934, 8940-9137, 9141-9582: *Soft Tissue Other* * 8935-8936: *GIST* * 9140: *Kaposi Sarcoma* **Note 4:** Summary Stage is the only applicable staging system for this site/histology/schema.

Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390 None
Primary Site <BLANK> Yes NAACCR #400 None
Histology <BLANK> Yes NAACCR #522 None
Schema Discriminator 1 <BLANK> Yes NAACCR #3926 All SSDI
Tumor Size Clinical <BLANK> No NAACCR #752 None
Tumor Size Pathological <BLANK> No NAACCR #754 None
Tumor Size Summary 999 No NAACCR #756 None
Regional Nodes Positive 99 No NAACCR #820 None
Regional Nodes Examined 99 No NAACCR #830 None
LVI 8 No NAACCR #1182 None
EOD Primary Tumor 888 Yes NAACCR #772 None
EOD Regional Nodes 888 Yes NAACCR #774 None
EOD Mets 88 Yes NAACCR #776 None
SS2018 9 No NAACCR #764 None
Grade Clinical 9 No NAACCR #3843 CCCR/Canada
COC
NPCR
SEER		 SSDI
Grade Pathological 9 No NAACCR #3844 CCCR/Canada
COC
NPCR
SEER		 SSDI
Grade Post Therapy <BLANK> No NAACCR #3845 CCCR/Canada
COC
NPCR
SEER		 SSDI

Initial Context

Staging Methods

Expand All | Collapse All

Summary Stage 2018

Start

  2. EOD Primary Tumor
  3. ss2018_t

Next Step

  2. EOD Regional Nodes
  3. ss2018_n

Next Step

  2. EOD Mets
  3. ss2018_m

Next Step

  2. Summary Stage - T only
  3. ss2018_derived

End

Outputs

Name Default Value Description NAACCR Item Metadata
Schema ID 99999 NAACCR #3800
None 		None
Derived Version {{ctx_alg_version}} None None
Derived Summary Stage 2018 9 NAACCR #762
None 		None