M stage is the coding system used to record the absence or presence of distant metastases at the time of diagnosis of the primary cancer. It is part of the TNM cancer staging system.
The absence or presence of distant metastasis.
Australian Institute of Health and Welfare
Sobin LH (Editors) (1997) International Union Against Cancer (UICC) TNM classification of malignant tumours, 5th edition. Wiley-Liss, New York
Has been superseded by Person with cancer—distant metastasis status Health, Standard 07/12/2011
Person with cancer—distant metastasis status, M stage (UICC TNM Classification of Malignant Tumours 5th ed) code XX Health, Superseded 06/03/2009
Person with cancer—distant metastasis status, M stage (UICC TNM Classification of Malignant Tumours, 6th edn) code XX Health, Superseded 07/12/2011