MYCOSIS FUNGOIDES (55)    AJCC STAGING GROUPS (164.33)

Name Value
NAME MYCOSIS FUNGOIDES
6TH EDITION (T) CODES
  • DESCRIPTION:   Limited patch/plaque
    CODE:   T1
  • DESCRIPTION:   Generalized patch/plaque
    CODE:   T2
  • DESCRIPTION:   Cutaneous tumors
    CODE:   T3
  • DESCRIPTION:   Generalized erythroderma
    CODE:   T4
  • DESCRIPTION:   Primary tumor cannot be assessed
    CODE:   TX
6TH EDITION (T) CODE HELP
Primary Tumor (T)

TX  Primary tumor cannot be assessed
T1  Limited patch/plaque   
T2  Generalized patch/plaque   
T3  Cutaneous tumors   
T4  Generalized erythroderma   
6TH EDITION (N) CODES
  • DESCRIPTION:   Clinically uninvolved
    CODE:   N0
  • DESCRIPTION:   Clinically enlarged, histologically uninvolved
    CODE:   N1
  • DESCRIPTION:   Clinically unenlarged, histologically involved
    CODE:   N2
  • DESCRIPTION:   Enlarged and histologically involved
    CODE:   N3
  • DESCRIPTION:   Regional lymph nodes cannot be assessed
    CODE:   NX
6TH EDITION (N) CODE HELP
Regional Lymph Nodes (N)

NX  Regional lymph nodes cannot be assessed
N0  Lymph nodes clinically uninvolved   
N1  Lymph nodes clinically enlarged, histologically uninvolved   
N2  Lymph nodes clinically unenlarged, histologically involved   
N3  Lymph nodes enlarged and histologically involved   
6TH EDITION (M) CODES
  • DESCRIPTION:   No visceral disease
    CODE:   M0
  • DESCRIPTION:   Visceral disease present
    CODE:   M1
  • DESCRIPTION:   Distant metastasis cannot be assessed
    CODE:   MX
6TH EDITION (M) CODE HELP
Distant Metastasis (M)

MX  Distant metastasis cannot be assessed
M0  No visceral disease   
M1  Visceral disease present   
7TH EDITION (T) CODES
7TH EDITION (T) CODE HELP
Primary Tumor (T) Skin
T4  Confluence of erythema covering 80% body surface area
 
T1  Limited patches, papules, and/or plaques covering <10% of the skin surface
    **per ISCL/EORTC: 'May further stratify into T1a (patch only) vs T1b
    (plaque +/- patch)'. The T1a & T1b values are not part of the AJCC algorithm.
T2  Patches, papules or plaques covering 10% of the skin surface.
    **per ISCL/EORTC: 'May further stratify into T1a (patch only) vs T1b
    (plaque +/- patch)'. The T2a & T2b values are not part of the AJCC algorithm.
T3  One or more tumors (1-cm diameter)
7TH EDITION (N) CODES
  • N-CODE:   X
  • N-CODE:   1A
  • N-CODE:   1B
  • N-CODE:   2A
  • N-CODE:   2B
7TH EDITION (N) CODE HELP
Regional Lymph Nodes (N)
N2   Clinically abnormal peripheral lymph nodes; histopathology Dutch
     grade 2 or NCI LN3
N2a  Clone negative
N2b  Clone positive
N3   Clinically abnormal peripheral lymph nodes; histopathology Dutch
     grades 3-4 or NCI LN4; clone positive or negative
 
NX   Clinically abnormal peripheral lymph nodes; no histologic
     confirmation
N0   No clinically abnormal peripheral lymph nodes; biopsy not required
N1   Clinically abnormal peripheral lymph nodes; histopathology Dutch
     grade 1 or NCI LN0-2
N1a  Clone negative
N1b  Clone positive
7TH EDITION (M) CODES
7TH EDITION (M) CODE HELP
Distant Metastasis (M) Visceral
 
M0  No visceral organ involvement
M1  Visceral involvement (must have pathology confirmation and organ 
    involved should be specified)