Merkel Cell Skin

Primary Site Histology
C000-C006, C008-C009, C440-C449, C510-C512, C518-C519, C600-C602, C608-C609, C632 8041, 8190, 8247
C809 8190, 8247

Notes

8041, 8190, 8247 (C000-C006, C008-C009, C440-C449, C510-C512, C518-C519, C600-C602, C608-C609, C632) 8190, 8247 (C809) **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 * Chapter 46 *Merkel Cell Carcinoma*, in the AJCC Cancer Staging Manual, Eighth Edition (2017) published by Springer International Publishing. Used with permission of the American College of Surgeons, Chicago, Illinois. **Note 2:** Merkel cell carcinoma presenting in nodal or visceral site with primary site unknown is coded to C449, Skin, NOS.

Data Items

Name Default Value Used in Derivation NAACCR Item Required By Metadata
Year of Diagnosis No NAACCR #390
dateOfDiagnosis 		None
Primary Site Yes NAACCR #400
primarySite 		None
Histology Yes NAACCR #522
histologicTypeIcdO3 		None
Behavior No NAACCR #523
behaviorCodeIcdO3 		None
Tumor Size Clinical No NAACCR #752
tumorSizeClinical 		None
Tumor Size Pathological No NAACCR #754
tumorSizePathologic 		None
Tumor Size Summary 999 Yes NAACCR #756
tumorSizeSummary 		None
Regional Nodes Positive 99 No NAACCR #820
regionalNodesPositive 		None
Regional Nodes Examined 99 No NAACCR #830
regionalNodesExamined 		None
LVI 9 No NAACCR #1182
lymphVascularInvasion 		None
RX Summ Surgery/Radiation Sequence No NAACCR #1380
rxSummSurgRadSeq 		None
RX Summ Systemic/Surgery Sequence No NAACCR #1639
rxSummSystemicSurSeq 		None
EOD Primary Tumor 999 Yes NAACCR #772
eodPrimaryTumor 		None
EOD Regional Nodes 999 Yes NAACCR #774
eodRegionalNodes 		None
EOD Mets 00 Yes NAACCR #776
eodMets 		None
SS2018 No NAACCR #764
summaryStage2018 		None
Grade Clinical 9 No NAACCR #3843
gradeClinical 		CCCR/Canada
COC
NPCR
SEER		 SSDI
Grade Pathological 9 No NAACCR #3844
gradePathological 		CCCR/Canada
COC
NPCR
SEER		 SSDI
Grade Post Therapy Clin (yc) No NAACCR #1068
gradePostTherapyClin 		COC
NPCR
SEER		 SSDI
Grade Post Therapy Path (yp) No NAACCR #3845
gradePostTherapy 		CCCR/Canada
COC
NPCR
SEER		 SSDI
Lymph Nodes Isolated Tumor Cells 8 No NAACCR #3880
lnIsolatedTumorCells 		COC
SEER		 SSDI
Profound Immune Suppression 8 No NAACCR #3918
profoundImmuneSuppression 		COC
SEER		 SSDI
Extranodal Extension Clinical 8 No NAACCR #3830
extranodalExtensionClin 		COC
SEER (RC)		 SSDI
Extranodal Extension Pathological 8 No NAACCR #3833
extranodalExtensionPath 		COC
SEER (RC)		 SSDI

Initial Context

Staging Methods

Expand All | Collapse All

Summary Stage 2018

Start

Additional Context
eod_2018_t = 90
eod_2018_m = 90
eod_2018_n = 90

Next Step

  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
  3. ss2018_derived

End

Outputs

Name Default Value Description NAACCR Item Metadata
Schema ID 00460 NAACCR #3800
schemaId 		None
Derived Version {{ctx_alg_version}} None None
Derived Summary Stage 2018 9 NAACCR #762
derivedSummaryStage2018 		None