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NAACCR Data Dictionary
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Version 22
Data Item #400: Primary Site

* indicates required field

Length: 4
Source of Standard: SEER/CoC
Section Name: Cancer Identification
Record Types: A, M, C, I

XML NAACCR ID: primarySite

Parent XML Element: Tumor

Alternate Names:

  • IDC-O-2/3 Topography (CCCR)

Required Status:

NPCR Collect: R - Required
CoC Collect: R - Required
SEER Collect: R - Required
CCCR Collect: R - Required

Description:

Code for the primary site of the tumor being reported using either ICD-O-2 or ICD-O-3. NAACCR adopted ICD-O-2 as the standard coding system for tumors diagnosed beginning January 1, 1992. In addition, NAACCR recommended that tumors diagnosed prior to 1992 be converted to ICD-O-2. The topography (primary site) codes did not change between ICD-O-2 and ICD-O-3.

Format:

C followed by 3 digits, no special characters, no embedded blanks

Item Data Type:

text

Allowable Values

Refer to ICD-O-3 (decimals are dropped)

Codes:

See ICD-O-2,^14^ or ICD-O-3,^13^ Topography Section, for the codes for primary site

Code Notes:

Note: See data item Site (73-91) ICD-O-1 [1960] for ICD-O-1 cases.