Extensible
20050110
Table CID 12121. Vascular Indices and Ratios
Coding Scheme Designator
Code Value
Code Meaning
LN
20167-3
Acceleration Index
SRT
R-101BA
Lumen Area Stenosis
R-101BB
Lumen Diameter Stenosis
12008-9
Pulsatility Index
12023-8
Resistivity Index
12144-2
Systolic to Diastolic Velocity Ratio
33867-3
Velocity ratio
This Context Group formerly included SNOMED codes G-0371 and G-0372, which have been replaced by R-101BA and R-101BB, respectively. See Annex J.