# International System of Units - unit of mass

The 258681007 | International System of Units unit of mass (qualifier value) | hierarchy contains concepts representing metric units of mass.

**Concepts representing Unit of Mass**

<table><thead><tr><th width="116.17010498046875"></th><th></th></tr></thead><tbody><tr><td><strong>FSN</strong></td><td><strong>X</strong> metric unit of mass</td></tr><tr><td><strong>PT</strong></td><td><p><strong>X</strong> metric unit of mass abbreviated without the expanded form</p><ul><li>This is an exception to the SNOMED CT standard of requiring abbreviations to be accompanied by the expanded term or phrase.</li></ul></td></tr><tr><td><strong>SYN</strong></td><td><strong>X</strong> metric unit of mass</td></tr></tbody></table>

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