Change Log | NAACCR Data Dictionary

Log of changes to Data Standards and Data Dictionary, V26, since original publication.

Date	Item #	Item Name	Field	Change	Note
07/03/2025	225	Sex Assigned at Birth	General Notes	Added Coding Instructions
07/03/2025	3908	Percent Necrosis Post Neoadjuvant	RST	CCCR status from . to RH*
07/17/2025	1133	Pediatric ID Version Current	Codes	Added Codes 1.1, 1.2, 1.3
07/17/2025	1134	Pediatric ID Version Original	Codes	Added Codes 1.1, 1.2, 1.3
07/17/2025	2117	Schema ID Version Current	Codes	Added Code 3.3
07/17/2025	2118	Schema ID Version Original	Codes	Added Code 3.3
8/7/2025	3905	Oncotype DX Risk Level-DCIS	RST	CoC: No Recommendation
8/7/2025	2906	Oncotype DX Risk Level-Invasive	RST	CoC: No Recommendation
8/7/2025	3908	Percent Necrosis Post Neoadjuvant	RST	CoC: No Recommendation
8/11/2025	331	Geocoding Accuracy Score			Added Allowable Values, Code Note, Data Type
8/11/2025	332	Geocoding Accuracy Type	Length	21	Also added Format, Item Data Type, Allowable Values, Codes, Code Descriptions, and Code Note.
8/14/2025	1068	Grade Post Therapy Clin (yc)	Description	Changed year in last sentence of Description from 2020 to 2021.
8/29/2025	3821	Chromosome 3 Status	RST	SEER: No Recommendation
8/29/2025	3822	Chromosome 8q Status	RST	SEER: No Recommendation
8/29/2025	3834	Extravascular Matrix Patterns	RST	SEER: No Recommendation
8/29/2025	3858	High Risk Histologic Features	RST	SEER: No Recommendation
8/29/2025	3881	LN Laterality	RST	SEER: No Recommendation
8/29/2025	3891	Microvascular Density	RST	SEER: No Recommendation
8/29/2025	3903	Oncotype Dx Recurrence Score-DCIS	RST	SEER: No Recommendation
8/29/2025	3803	Adenoid Cystic Basaloid Pattern	RST	SEER revised "RS" to "RC"
8/29/2025	3806	AFP Post-Orchiectomy Range	RST	SEER revised "RS" to "RC"
8/29/2025	3808	AFP Pre-Orchiectomy Range	RST	SEER revised "RS" to "RC"
8/29/2025	3815	Bone Invasion	RST	SEER revised "RS" to "RC"
8/29/2025	3836	FIGO Stage	RST	SEER revised "RS" to "RC"
8/29/2025	3842	Gleason Tertiary Pattern	RST	SEER revised "RS" to "RC"
8/29/2025	3847	hCG Post-Orchiectomy Range	RST	SEER revised "RS" to "RC"
8/29/2025	3849	hCG Pre-Orchiectomy Range	RST	SEER revised "RS" to "RC"
8/29/2025	3867	LDH Post-Orchiectomy Range	RST	SEER revised "RS" to "RC"
8/29/2025	3868	LDH Pre-Orchiectomy Range	RST	SEER revised "RS" to "RC"
9/02/2025	3876	LN Head and Neck Levels I-III	RST	SEER revised "RS" to "RC"
9/02/2025	3877	LN Head and Neck Levels IV-V	RST	SEER revised "RS" to "RC"
9/02/2025	3878	LN Head and Neck Levels VI-VII	RST	SEER revised "RS" to "RC"
9/02/2025	3879	LN Head and Neck Other	RST	SEER revised "RS" to "RC"
9/02/2025	3880	LN Isolated Tumor Cells (ITC)	RST	SEER revised "RS" to "RC"
9/02/2025	3896	NCCN International Prognostic Index (IPI)	RST	SEER revised "RS" to "RC"
9/02/2025	3918	Profound Immune Suppression	RST	SEER revised "RS" to "RC"
9/02/2025	3921	Residual Tumor Volume Post Cytoreduction	RST	SEER revised "RS" to "RC"
9/02/2025	3932	LDH Lab Value	RST	SEER revised "RS" to "RC"
9/02/2025	3961	Clinical Margin Width	RST	SEER revised "RS" to "RC"
9/02/2025	3861	Ipsilateral Adrenal Gland Involvement	RST	SEER revised "RS" to "RC"
9/02/2025	3883	LN Size	RST	SEER revised "RS" to "RC"
9/02/2025	3864	Invasion Beyond Capsule	RST	SEER revised "RS" to "RC"
9/02/2025	3886	Major Vein Involvement	RST	SEER revised "RS" to "RC"
9/02/2025	3929	Separate Tumor Nodules	RST	SEER revised "RS" to "RC"
9/02/2025	3934	Tumor Deposits	RST	SEER revised "RS" to "RC"
9/02/2025	3937	Visceral and Parietal Pleural Invasion	RST	SEER revised "RS" to "RC"
9/02/2025	3897	Number of Cores Examined	RST	SEER revised "RS" to "RC"
9/02/2025	3898	Number of Cores Positive	RST	SEER revised "RS" to "RC"
9/02/2025	3832	Extranodal Extension Head and Neck Pathological	RST	SEER revised "RS" to "RC"
9/22/2025	3863	Ki-67	RST	SEER Revised "RC" to "RS"
9/22/2025	1856	Reporting Facility Restriction Flag	Code Definition	Removed .* from end of Code Definition 00
9/26/2025	3859	HIV Status	RST	SEER revised "RS" to "."
9/26/2025	3897	Number of Cores Examined	RST	SEER revised "RC" to "RS"
9/26/2025	3898	Number of Cores Positive	RST	SEER revised "RC" to "RS"
10/15/2025	2230	Name--Last	RST	CoC revised "R" to “S”
10/15/2025	2232	Name--Birth Surname	RST	CoC revised "R" to “S”
10/15/2025	2240	Name--First	RST	CoC revised "R" to “S”
10/15/2025	2250	Name--Middle	RST	CoC revised "R" to “S”
10/15/2025	2280	Name--Alias	RST	CoC revised "R" to “S”
3/5/2026	2158	AJCC Cancer Surveillance DLL Version Current	RST	NPCR revised “D” to “.”
3/5/3026	2159	AJCC Cancer Surveillance DLL Version Original	RST	NPCR revised “D” to “.”