<status value="draft" /> <experimental value="false" /> <description value="NPCR-internal code system for the highest PI-RADS (Prostate Imaging Reporting and Data System) assessment category reported in MRI examinations, based on NPCR Variabelbeskrivning variable D_Pirads. PI-RADS v2.1 is a 5-point scale developed by the American College of Radiology (ACR) to assess the likelihood of clinically significant prostate cancer from multiparametric MRI. NPCR extends the standard 5-point scale with one additional combined option (code 6 = PI-RADS 1-2 combined) and one missing-data marker (98 = Uppgift saknas). Codes 1 through 5 directly correspond to PI-RADS v2.1 categories as defined by ACR. Code 6 is an NPCR-specific data-entry convenience representing a combined 'PI-RADS 1 or 2' option (low likelihood, not distinguishable in the source report); code 98 indicates missing data in the MRI report. Terminology binding rationale: NPCR documentation does not specify an international code system binding for PI-RADS values. PI-RADS is an ACR reporting system rather than a standard terminology like SNOMED CT or LOINC; while LOINC does contain codes for PI-RADS-related observations, NPCR Info Spec does not reference them. This CodeSystem mirrors NPCR's internal coded values to preserve documentation fidelity. Future mapping to LOINC/SNOMED CT for PI-RADS is noted as future work." /> <caseSensitive value="true" /> <content value="complete" /> <count value="7" /> <concept> <code value="1" /> <display value="PI-RADS 1 - Very low likelihood" /> <definition value="Very low likelihood of clinically significant prostate cancer (Mycket låg sannolikhet att kliniskt signifikant tumör föreligger)." /> </concept> <concept> <code value="2" /> <display value="PI-RADS 2 - Low likelihood" /> <definition value="Low likelihood of clinically significant prostate cancer (Låg sannolikhet att kliniskt signifikant tumör föreligger)." /> </concept> <concept> <code value="3" /> <display value="PI-RADS 3 - Equivocal" /> <definition value="Equivocal: unclear whether clinically significant prostate cancer is present (Oklart om kliniskt signifikant tumör föreligger). Per NPCR Manual: when EPI or SVI is assessed at PI-RADS 3, these should not be reported." /> </concept> <concept> <code value="4" /> <display value="PI-RADS 4 - High likelihood" /> <definition value="High likelihood of clinically significant prostate cancer (Hög sannolikhet att kliniskt signifikant tumör föreligger)." /> </concept> <concept> <code value="5" /> <display value="PI-RADS 5 - Very high likelihood" /> <definition value="Very high likelihood of clinically significant prostate cancer (Mycket hög sannolikhet att kliniskt signifikant tumör föreligger)." /> </concept> <concept> <code value="6" /> <display value="PI-RADS 1-2 combined - Low likelihood" /> <definition value="NPCR-specific combined category for PI-RADS 1 or 2 when the source report does not distinguish between them (Låg sannolikhet att klinisk signifikant tumör föreligger)." /> </concept> <concept> <code value="98" /> <display value="Uppgift saknas" /> <definition value="Information missing / not available." /> </concept> </CodeSystem>