V.3.5.6 Gleason's Score

A special descriptive method, Gleason's Score, is used for prostate cancer. It is obtained by adding two separate numbers to produce a score in the range of 2 to 10. First, a number is assigned to the predominant (primary) pattern (i.e., the pattern that comprises more than half the tumor). Then a number is assigned to the lesser (secondary) pattern, and the two numbers are added to obtain Gleason's Score.

If only one number is stated, and it is 5 or less, assume that it represents the primary pattern. If the number is higher than 5, assume that it is the score. If there are two numbers, add them to obtain the score.

Sometimes, the number 10 is written after Gleason's Score to show the relationship between the actual score and the highest possible score (e.g., Gleason's 3/10 indicates a score of 3).

If a number is not identified as Gleason's, assume that a different grading system was used and code appropriately.

When both grade and Gleason's Score are provided in the same specimen, code the grade. When they are in different specimens, code to the highest grade.

If only Gleason's Score (2-10) is available, convert it to grade according to the following table:

* The grade and code for Gleason's Score 7 were revised in 2003. See historic coding instructions for specific information.

Note: This grading system is coded in a site-specific factor for the applicable CS schema.

<< Prev.       Next >>