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SEER Training Modules

Distant Spread

M (Metastases)

Code Description
MX Minimum requirements to assess presence of distant metastases cannot be met
M0 No evidence of distant metastases
M1 Presence of distant metastases
Additional notation for recording specific sites of metastases
Site Notation
Pulmonary PUL
Bone marrow MAR
Osseous OSS
Pleura PLE
Hepatic HEP
Skin SKI
Brain BRA
Eye EYE
Lymph nodes LYM
Other OTH