Note 1: Usually prostate cancers are graded using Gleason's score or pattern.Gleason's grading for prostate primaries is based on a 5-component system (5 histologic patterns).Prostatic cancer generally shows two main histologic patterns.The primary pattern that is, the pattern occupying greater than 50% of the cancer is usually indicated by the first number of the Gleason's grade and the secondary pattern is usually indicted by the second number.These two numbers are added together to create a pattern score, ranging from 2 to 10.If only one number is given and it is greater than 5, assume that it is a score.If there are two numbers, assume that they refer to two patterns (the first number being the primary and the second number being the secondary) and sum them to obtain the score.If the pathology report specifies a specific number out of a total of 10, the first number given is the score.Example:The pathology report says "Gleason's 3/10".The Gleason's score would be 3.
Note 2: Record the Gleason's score based on the addition of the primary and secondary pattern.
Note 3: Following AJCC guidelines for coding multiple Gleason's Scores in prostate cancer, if there is more than one primary and secondary pattern value, the value to be coded is the one based on the larger tumor specimen.Please note that this rule is not the same as the rule for coding grade.
| Code | Description |
|---|---|
| 000 | Test not done (test was not ordered and was not performed) |
| 002-010 | Gleason's Score (See Notes 1, 2 and 3) |
| 999 | Unknown or no information Not documented in patient record |