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The descriptions for all procedure concepts that use contrast must explicitly state ‘with contrast.’ All procedures that use contrast, including 420040002 |Fluoroscopic angiography with contrast (procedure)| and all subtypes, must include the attribute 424361007 |Using substance (attribute)| and a value of 385420005 |Contrast media (substance)| or a subtype in the role group.
Where the value for the method imaging action is 278110001 |Radiographic imaging - action (qualifier value)| or a subtype, the value for 424361007 |Using substance (attribute)| must be 419098001 |Radiographic imaging contrast media (substance)| or a subtype to denote the radio-opaque nature of the substance.
- Exception: procedures which specify negative contrast which is non-radio-opaque
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This guidance should be applied to new content, the process of updating existing content will be carried out as time and resources permit. |
It is unnecessary to add the word media to contrast.
It is agreed that the linking word to associate the contrast use with the procedure is with - not for, or, etc.
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There is a suggestion that additional Additional concept detail is required when it is necessary to know the more precise nature of contrast (e.g. iodinated with various osmolalities, barium, or gas). |
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Concept t 566341000119106 |Computed tomography of ankle without contrast (procedure)| - FSN: Computed tomography of ankle without contrast (procedure)
- PT: CT of ankle without contrast
- SYN: Computed tomography of ankle without contrast
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- contrast
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There is a case for explicitly adding a concept qualification when naming procedures that are explicitly performed without contrast.
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Unacceptable concept qualification
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