Tumor Size Summary

Notes

See the [SEER Program Coding Manual](https://seer.cancer.gov/tools/codingmanuals/index.html) for coding instructions.

Default

000

NAACCR Item

NAACCR #756
Code Tumor Size Description
000 No mass/tumor found
001 1 mm or described as less than 1 mm
002-988 Exact size in millimeters (2 mm to 988 mm)
989 989 millimeters or larger
990 Microscopic focus or foci only and no size of focus is given
999 Unknown Size not stated Not documented in medical record Size of tumor cannot be assessed Not applicable