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National Cancer Data Base - Data Dictionary PUF 2014

AJCC Clinical T

PUF Data Item Name: 
TNM_CLIN_T
NAACCR Item #: 
940
length: 
4
Allowable values: 
Alphanumeric, Uppercase
Description: 
Identifies the clinically-determined size and/or extension of the primary tumor (cT) as defined by the American Joint Committee on Cancer (AJCC).
Registry Coding Instructions: 

·         Refer to the applicable AJCC Cancer Staging Manual for coding rules.
 

Analytic Note: 

For cases diagnosed on or prior to December 31, 2003, this item was expected to be completed by an attending physician, though registry staff were frequently involved in the determination of the information coded in this item though the review of full range of clinical and patient notes available to registry staff.  For cases diagnosed January 1, 2004, through December 31, 2007, the CoC required registries to copy the staging elements from a standardized document found in the patient record, as recorded by the managing physician. PUF users may notice an increase in the proportion of cases with cT reported as X as a consequence of the CoC restriction on the allowable range of registry coding of information beyond that documented by the managing physician.
 
The rules changed again with cases diagnosed in 2008.  Beginning with 2008 diagnoses, registrars were required to record clinical stage.  If it was not available from a physician, it was to be coded from information available in the patient record.
 
Cases are coded using the AJCC Cancer Staging Manual edition in use during the year in which the case was diagnosed.  Consult the appropriate edition of this manual for organ or site specific codes and their definitions.  See AJCC TNM Edition Number (NAACCR Item #1060).  Prior to implementation of the 5th edition of the manual, some "slippage" in version occurred, and edition numbers are not included in the PUF for those older cases. 
 
Codes on this list comprise all codes valid for any AJCC manual through the 7th edition and for any chapter.  Please consult the applicable manual and chapter for codes that are valid for specific site, histology and AJCC edition combinations.
 
There is no standard mechanism to recode AJCC items from one edition to another.  Careful review of the individual definitions in the respective AJCC manuals is necessary before combining or comparing data across two or more AJCC editions.
 

Code

Definition

Code

Definition

Blank

Not available in patient record

2A

cT2a

X

cTX

2A1

cT2a1

0

cT0

2A2

cT2a2

A

cTa

2B

cT2b

IS

cTis

2C

cT2c

ISPU

cTispu

2D

cT2d

ISPD

cTispd

3

cT3

1MI

cT1mic

3A

cT3a

1

cT1

3B

cT3b

1A

cT1a

3C

cT3c

1A1

cT1a1

3D

cT3d

1A2

cT1a2

4

cT4

1B

cT1b

4A

cT4a

1B1

cT1b1

4B

cT4b

1B2

cT1b2

4C

c4c

1C

cT1c

4D

c4d

1D

cT1d

4E

c4e

2

cT2

88

Not applicable