NAACCR Item #3893: Mitotic Rate Melanoma
| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 3,893 | 2 | NAACCR | 2018 | 18 |
NAACCR XML: Tumor.mitoticRateMelanoma
Description
Mitotic Rate Melanoma, the number of mitoses per square millimeter based on pathological evaluation, is a prognostic factor for melanoma of the skin.
Rationale
Mitotic Rate Melanoma is a Registry Data Collection Variable in AJCC. It was previously collected as Melanoma Skin, CS SSF# 7.
Codes
| 00 | 0 mitoses per square millimeter (mm) Mitoses absent No mitoses present |
| 01-99 | 1 - 99 mitoses/square mm (Exact measurement in mitoses/square mm) |
| X1 | 100 mitoses/square mm or more |
| X2 | Stated as "less than 1 mitosis/square mm" Stated as "nonmitogenic" |
| X3 | Stated as "at least 1 mitosis/square mm" Stated as "mitogenic" |
| X4 | Mitotic rate described with denominator other than square millimeter (mm) |
| X7 | Test ordered, results not in chart |
| X8 | Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code X8 may result in an edit error.) |
| X9 | Not documented in medical record Mitotic Rate Melanoma not assessed or unknown if assessed |
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.