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Mitotic Count Uveal Mel (Melanoma Iris)

Mitotic Count Uveal Mel (Melanoma Iris)

Data Item Details

Parent Schema: Melanoma Iris
NAACCR Item: #3892
NAACCR XML ID: mitoticCountUvealMelanoma

Organization Field Mapping

Organization

Field Name

ID#

ID Name

Required

Organization

Field Name

ID#

ID Name

Required

KCR

Mitotic Count Uveal Melanoma

34089

MitoticCountUvealMEL

yes

SEER

Mitotic Count Uveal Mel

3892

mitoticCountUvealMelanoma

yes

Valid Values

Notes

Note 1 Physician Statement

  • Physician statement of mitotic count for a uveal melanoma can be used to code this data item when no other information is available.

Note 2 Mitotic count defined

  • The number of mitoses per 40 high-power fields (HPF), reflects the potential aggressiveness or prognosis of uveal melanomas

  • This data item presumes the denominator of 40 HPF, so just the numerator (the mitotic count) is coded here.

  • For other schemas in which mitotic count is collected, the denominator may vary.

Note 3 High Power Field (HPF) defined

  • An HPF usually has a magnification objective of 40 (a 40x field)

  • As described in the AJCC chapter on Uveal Melanomas, the typical field area is 0.152 square millimeters (mm2).

Note 4 Recording the results

  • Record mitotic count to the nearest tenth as documented in the pathology report.

  • For example, a mitotic count of 6/40 HPF would be coded 6.0.

Code

Description

Code

Description

0.0

0 mitoses per 40 high-power fields (HPF)
Mitoses absent, no mitoses present, no mitotic activity

0.1-99.9

0.1-99.9 mitosis per 40 HPF

XX.1

100 or more mitoses per 40 HPF

XX.2

Stated as low mitotic count or rate with no specific number

XX.3

Stated as high mitotic count or rate with no specific number

XX.4

Mitotic count described with denominator other than 40 HPF

XX.7

Test ordered, results not in chart

XX.8

Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code XX.8 may result in an edit error.)

XX.9

Not documented in medical record
Mitotic Count Uveal Melanoma not assessed or unknown if assessed

For official definitions and additional context, refer to the NAACCR Data Dictionary.