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The anatomical extent of disease in a person with cancer based on the previously coded T, N and M stage categories, as represented by a code.


Data Element (this item)


This representation is based on the value domain for this data element, more information is available at " TNM stage (UICC TNM Classification of Malignant Tumours, 7th ed) code X[XX] ".
Data Type String
Format X[XX]
Maximum character length 3
Value Meaning Start Date End Date
Supplementary Values 997 Not applicable
998 Unknown
999 Not stated/inadequately described


Guide for use:

Record the extent of the primary cancer at the time of diagnosis of the cancer.

TNM staging applies to solid tumours excluding brain tumours.

The current edition of the American Joint Committee on Cancer (AJCC) Cancer Staging Manual provides an equivalent and alternative source of TNM stage grouping codes.

Stage groupings using classification systems other than the TNM classification system are recorded separately.

Cancer stage is an important determinant of treatment and prognosis, and is used to evaluate new treatments and analyse outcomes. Survival analysis is adjusted by stage at diagnosis and distribution of cancer cases by type and stage.


Sobin LH, Gospodarowicz MK, Wittekind C (Editors) 2009. International Union Against Cancer (UICC): TNM Classification of Malignant Tumours, 7th edition. Wiley-Blackwell

American Joint Committee on Cancer 2010. AJCC Cancer Staging Manual, 7th edition. New York: Springer

American College of Surgeons 2002. Facility Oncology Registry Data Standards (FORDS), 2009 revision. Commission on Cancer
This content Based on Australian Institute of Health and Welfare material. Attribution provided as required under the AIHW CC-BY licence.

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Relation Count
Input in Derivations 0
Output in Derivations 0
Inclusion in Data Set Specifications 3
Inclusion in Data Distributions 0
As a numerator in an Indicator 1
As a denominator in an Indicator 1
As a disaggregation in an Indicator 1