Organization

Field Name

ID

Required

KCR

pTNM Stage Group (PStageGroup)

31040

yes

NAACCR

TNM Path Stage Group

910

yes


Field Length:  4

This field identifies the anatomic extent of disease based on the T, N, and M elements known following the completion of surgical therapy.  Code the pathologic TNM stage grouping from the pTNM classification in items 31010-31030, using the AJCC Cancer Staging Manual.  Record '88' if the site/histology does not have a TNM staging scheme. Choose the lower (less advanced) stage grouping when there is any uncertainty.

Note: For diagnoses prior to 2004, this field was used to calculate Best Stage Group. It becomes the Best Stage, unless the value is '88' or '99,’ or pre-surgical treatment was administered.  After 2004, the CS derived AJCC 6th edition stage group is the Best Stage Group.

Code

Definition

Code

Definition

0

Stage 0

2B

Stage IIB

0A

Stage 0A

2C

Stage IIC

0IS

Stage 0is

3

Stage III

1

Stage I

3A

Stage IIIA

1A

Stage IA

3B

Stage IIIB

1A1

Stage IA1

3C

Stage IIIC

1A2

Stage IA2

3C1

Stage IIIC1

1B

Stage IB

3C2

Stage IIIC2

1B1

Stage IB1

4

Stage IV

1B2

Stage IB2

4A

Stage IVA

1C

Stage IC

4A1

Stage IVA1

1S

Stage IS

4A2

Stage IVA2

2

Stage II

4B

Stage IVB

2A

Stage IIA

4C

Stage IVC

2A1

Stage IIA1

OC

Occult

2A2

Stage IIA2

88

Not applicable



99

Unknown