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CID 3493 IVUS Relative Stenosis Severities
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## CID 3493 IVUS Relative Stenosis Severities

This context group is a set of stenosis severity classifications for multiple lesions within a segment. There will always be a worst stenosis (T-1), the stenosis with the smallest lumen size.

There can be multiple secondary stenoses (T-2, T-3, etc.), which are lesions meeting the definition of a stenosis, but with lumen sizes larger than the worst stenosis. Reference "American College of Cardiology Clinical Expert Consensus Document on Standards for Acquisition, Measurement and Reporting of Intravascular Ultrasound Studies (IVUS) ".

Type:

  Extensible

Version:

  20040614

Table CID 3493. IVUS Relative Stenosis Severities

Coding Scheme Designator | Code Value | Code Meaning
--- | --- | ---
DCM | 122367 | T-1 Worst
DCM | 122368 | T-2 Secondary
DCM | 122369 | T-3 Secondary
DCM | 122370 | T-4 Secondary

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