Table 2.

CONTEXT GROUP CID 7470–LINEAR MEASUREMENTS^a

Coding Scheme Designator	Code Value	Code Meaning
SRT b	G-A22A	Length
DCM c	121211	Path length
DCM	121206	Distance
SNM3 d	G-A220	Width
SRT	G-D785	Depth
SNM3	M-02550	Diameter
SNM3	G-A185	Long Axis
SNM3	G-A186	Short Axis
SRT	G-A193	Major Axis
SRT	G-A194	Minor Axis
SRT	G-A195	Perpendicular Axis
SNM3	G-A196	Radius
SRT	G-A197	Perimeter
SNM3	M-02580	Circumference
SRT	G-A198	Diameter of circumscribed circle
DCM	121207	Height

Note the following explanations of the features of this template:

^aThis context group is declared in the standard to be extensible, which means that additional codes may be added to it as the need arises.

^bSRT indicates that the code is from SNOMED.

^cDCM indicates that the code is from DICOM.

^dSNM3 also indicates that the code is from SNOMED; the use is historical since the designator was defined and used for Version 3 of SNOMED; terms adopted from any subsequent version of SNOMED will use a designator of SRT.