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Introduction | | Coding Practice | Additional Information | |||||||||
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| General Guidelines | | Coding T, N, and M Equivalent | Coding Site-Specific Factors | Unit Review & Quiz | | |||||||||||
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Introduction | | Coding Practice | Additional Information | |||||||||
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| General Guidelines | | Coding T, N, and M Equivalent | Coding Site-Specific Factors | Unit Review & Quiz | | |||||||||||
The Collaborative Staging System incorporates four data items (size, ext., nodes, mets) which record how the codes were determined based on the diagnostic methods employed -- not just the stage group.
The CS method of evaluation data items are the CS Tumor/Extension Evaluation code for tumor (T); the CS Lymph Node Evaluation code for lymph nodes (N), and the CS Mets Eval code for the distant metastasis at diagnosis (M). Each is a one-character code with coding instructions described in the Collaborative Staging Manual.
This field is used primarily to describe whether the staging basis for the T, N, and M in the TNM system is clinical or pathological.
The evaluation fields also identify cases with pre-operative treatment and explain why and when clinical information was used in place of pathologic information. The evaluation fields allow for mixed staging; for example, pT3 cN0 cM0 cTX pN1 cM0.
Click the following links to see tables showing CS Tumor Size/Extension Evaluation, CS Regular Nodes Evaluation, and CS Metastases Evaluation.
