MERKEL CELL CARCINOMA (60)    AJCC STAGING GROUPS (164.33)

Name Value
NAME MERKEL CELL CARCINOMA
7TH EDITION (T) CODES
  • T-CODE:   X
  • T-CODE:   IS
7TH EDITION (T) CODE HELP 
Primary Tumor (T)
 
TX   Primary tumor cannot be assessed
T0   No evidence of primary tumor
Tis  In situ primary tumor
T1   Less than or equal to 2 cm maximum tumor dimension
T2   Greater than 2 cm but not more than 5 cm maximum tumor dimension
T3   Over 5 cm maximum tumor dimension
T4   Primary tumor invades bone, muscle, fascia, or cartilage
7TH EDITION (N) CODES
  • N-CODE:   X
  • N-CODE:   1A
  • N-CODE:   1B
7TH EDITION (N) CODE HELP 
Regional Lymph Nodes (N)
 
NX   Regional lymph nodes cannot be assessed
N0   No regional lymph node metastasis
N1   Metastasis in regional lymph node(s)
N1a  Micrometastasis
N1b  Macrometastasis
N2   In transit metastasis
7TH EDITION (M) CODES
  • M-CODE:   1A
  • M-CODE:   1B
  • M-CODE:   1C
7TH EDITION (M) CODE HELP 
Distant Metastasis (M)
 
M0   No distant metastasis
M1   Metastasis beyond regional lymph nodes
M1a  Metastasis to skin, subcutaneous tissues or distant lymph nodes
M1b  Metastasis to lung
M1c  Metastasis to all other visceral sites