• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation

  Code	Display	Definition
  B	Better	The current result or observation value has improved compared to the previous result or observation value (the change is significant as defined in the respective test procedure). \[Note: This can be applied to quantitative or qualitative observations.\]
  D	Significant change down	The current result has decreased from the previous result for a quantitative observation (the change is significant as defined in the respective test procedure).
  U	Significant change up	The current result has increased from the previous result for a quantitative observation (the change is significant as defined in the respective test procedure).
  W	Worse	The current result or observation value has degraded compared to the previous result or observation value (the change is significant as defined in the respective test procedure). \[Note: This can be applied to quantitative or qualitative observations.\]
  <	Off scale low	The result is below the minimum detection limit (the test procedure or equipment is the limiting factor). Synonyms: Below analytical limit, low off scale.
  >	Off scale high	The result is above the maximum quantifiable limit (the test procedure or equipment is the limiting factor). Synonyms: Above analytical limit, high off scale.
  A	Abnormal	The result or observation value is outside the reference range or expected norm (as defined for the respective test procedure). \[Note: Typically applies to non-numeric results.\]
  AA	Critical abnormal	The result or observation value is outside a reference range or expected norm at a level at which immediate action should be considered for patient safety (as defined for the respective test procedure). \[Note: Typically applies to non-numeric results. Analogous to critical/panic limits for numeric results.\]
  HH	Critical high	The result for a quantitative observation is above a reference level at which immediate action should be considered for patient safety (as defined for the respective test procedure). Synonym: Above upper panic limits.
  LL	Critical low	The result for a quantitative observation is below a reference level at which immediate action should be considered for patient safety (as defined for the respective test procedure). Synonym: Below lower panic limits.
  H	High	The result for a quantitative observation is above the upper limit of the reference range (as defined for the respective test procedure). Synonym: Above high normal
  L	Low	The result for a quantitative observation is below the lower limit of the reference range (as defined for the respective test procedure). Synonym: Below low normal
  N	Normal	The result or observation value is within the reference range or expected norm (as defined for the respective test procedure). \[Note: Applies to numeric or non-numeric results.\]
  I	Intermediate	Bacterial strain inhibited in vitro by a concentration of an antimicrobial agent that is associated with uncertain therapeutic effect. Reference: CLSI (http://www.clsi.org/Content/NavigationMenu/Resources/HarmonizedTerminologyDatabase/Harmonized\_Terminolo.htm) Projects: ISO 20776-1, ISO 20776-2 \[Note 1: Bacterial strains are categorized as intermediate by applying the appropriate breakpoints in a defined phenotypic test system.\] \[Note 2: This class of susceptibility implies that an infection due to the isolate can be appropriately treated in body sites where the drugs are physiologically concentrated or when a high dosage of drug can be used.\] \[Note 3: This class also indicates a "buffer zone," to prevent small, uncontrolled, technical factors from causing major discrepancies in interpretations.\] \[Note 4: These breakpoints can be altered due to changes in circumstances (e.g., changes in commonly used drug dosages, emergence of new resistance mechanisms).\]
  MS	moderately susceptible	The patient is considered as carrier based on the testing results. A carrier is an individual who carries an altered form of a gene which can lead to having a child or offspring in future generations with a genetic disorder. ***Deprecation Comment:*** This antimicrobial susceptibility test interpretation concept is recommended by OO to be deprecated as it is no longer recommended for use in susceptibility testing by CLSI (reference CLSI document M100-S22; Vol. 32 No.3; CLSI Performance Standards for Antimicrobial Susceptibility Testing; Twenty-Second Informational Supplement. Jan 2012).
  R	Resistant	Bacterial strain inhibited in vitro by a concentration of an antimicrobial agent that is associated with a high likelihood of therapeutic failure. Reference: CLSI (http://www.clsi.org/Content/NavigationMenu/Resources/HarmonizedTerminologyDatabase/Harmonized\_Terminolo.htm) Projects: ISO 20776-1, ISO 20776-2 \[Note 1: Bacterial strains are categorized as resistant by applying the appropriate breakpoints in a defined phenotypic test system.\] \[Note 2: This breakpoint can be altered due to changes in circumstances (e.g., changes in commonly used drug dosages, emergence of new resistance mechanisms).\]
  S	Susceptible	Bacterial strain inhibited by in vitro concentration of an antimicrobial agent that is associated with a high likelihood of therapeutic success. Reference: CLSI (http://www.clsi.org/Content/NavigationMenu/Resources/HarmonizedTerminologyDatabase/Harmonized\_Terminolo.htm) Synonym (earlier term): Sensitive Projects: ISO 20776-1, ISO 20776-2 \[Note 1: Bacterial strains are categorized as susceptible by applying the appropriate breakpoints in a defined phenotypic system.\] \[Note 2: This breakpoint can be altered due to changes in circumstances (e.g., changes in commonly used drug dosages, emergence of new resistance mechanisms).\]
  VS	very susceptible	The patient is considered as carrier based on the testing results. A carrier is an individual who carries an altered form of a gene which can lead to having a child or offspring in future generations with a genetic disorder. ***Deprecation Comment:*** This antimicrobial susceptibility test interpretation concept is recommended by OO to be deprecated as it is no longer recommended for use in susceptibility testing by CLSI (reference CLSI document M100-S22; Vol. 32 No.3; CLSI Performance Standards for Antimicrobial Susceptibility Testing; Twenty-Second Informational Supplement. Jan 2012).

Expansion based on codesystem ObservationInterpretation v2.1.0 (CodeSystem)

This value set contains 18 concepts.