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cimi.medication

The CIMI Medication domain contains definitions related to medications taken, or not taken, by the person of record, both currently and in the past.

AdditionalDoseInstruction

Supplemental instructions - e.g. 'with meals'. C1644714

Value:  CodeableConcept A set of codes drawn from different coding systems, representing the same concept.

AdministrationBodySite

The anatomic site at which medical intervention is applied. C0229986

Value:  AnatomicalLocation A location or structure in the body, including tissues, regions, cavities, and spaces; for example, right elbow, or left ventricle of the heart.

AdministrationMethod

Technique for administering medication. C1547585

Value:  CodeableConcept A set of codes drawn from different coding systems, representing the same concept.

AsNeededIndicator

Indicates the pre-condition under which the drug or intervention should be used. C1883728

Value:  Choice required
         |  boolean
         |  CodeableConcept could be from http://hl7.org/fhir/ValueSet/medication-as-needed-reason
A set of codes drawn from different coding systems, representing the same concept.

Dosage

The dosage of the medication, prescribed or taken. C0178602

DoseAmount required The amount of medication taken per dose, as a quantity or range.
TimingOfDoses required When doses of medication should be administered.
AsNeededIndicator required Indicates the pre-condition under which the drug or intervention should be used.
DoseInstructionsText optional The directions (signetur) on the drug prescription or dispensing record.
AdditionalDoseInstruction must be from http://hl7.org/fhir/ValueSet/additional-instruction-codes
0 or more Supplemental instructions - e.g. 'with meals'.
RouteIntoBody optional The way a substance enters an organism after contact, particularly, the route of drug administration.
AdministrationMethod must be from http://hl7.org/fhir/ValueSet/administration-method-codes
optional Technique for administering medication.
AdministrationBodySite optional The anatomic site at which medical intervention is applied.
MaximumDosePerTimePeriod optional The maximum amount of a medication to be taken in a given period of time (e.g., no more than x in any 24-hour period)

DoseAmount

The amount of medication taken per dose, as a quantity or range.

Value:  Choice required
         |  SimpleQuantity A quantity where the comparator is not used, as defined in FHIR
         |  Range An interval defined by a quantitative upper and/or lower bound. One of the two bounds must be specified, and the lower bound must be less than the upper bound. When Quantities are specified, the units of measure must be the same.

DoseInstructionsText

The directions (signetur) on the drug prescription or dispensing record.

Value:  string

MaximumDosePerTimePeriod

The maximum amount of a medication to be taken in a given period of time (e.g., no more than x in any 24-hour period)

Value:  Ratio A unit of measurement for the quotient of the amount of one entity to another.

MedicationAdherenceStatement [Entry]

The degree (frequency) that the stated treatment plan, prescription, or protocol was followed. A statement of the ability and cooperation of the patient in taking medicine or supplement as recommended or prescribed. This includes correct timing, dosage, and frequency. C2364172

Based On CodedEvaluationResultRecorded

MedicationNonAdherenceReason 0 or more Reason that patient did not adhere to a medication regimen.
StatementTopic must be a EvaluationResultTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
         where  EvaluationResultTopic
StatementContext must be a EvaluationResultRecordedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
         where  EvaluationResultRecordedContext
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
SourceOfInformation optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationAfterChange

The medication taken, prior to the change.

Value:  Choice required
         |  MedicationDispenseRequestedStatement An order for a medication to be dispensed and instructions for use.
         |  MedicationUsedStatement A record of the use of a medication.

MedicationBeforeChange

The medication taken, prior to the change.

Value:  Choice required
         |  MedicationDispenseRequestedStatement An order for a medication to be dispensed and instructions for use.
         |  MedicationUsedStatement A record of the use of a medication.

MedicationChangeStatement [Entry]

Description of a modification or change of a medication or dosage. C0554834

Based On ClinicalStatement

StatementTopic must be a MedicationChangeTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
StatementContext must be a PerformedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
PerformedContext
         where  Reason must be from MedicationChangeReasonVS
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
SourceOfInformation optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationChangeTopic

No Description

Based On ActionTopic

Type must be from MedicationChangeTypeVS
required The most specific code (lowest level term) describing the kind or sort of thing being represented.
MedicationBeforeChange 0 or more The medication taken, prior to the change.
MedicationAfterChange 0 or more The medication taken, prior to the change.
Category optional A class or division of people or things having particular shared characteristics
TopicCode required The concept representing the finding or action that is the topic of the statement. For action topics, the TopicCode represents the action being described. For findings, the TopicCode represents the 'question' or property being investigated. For evaluation result findings, the TopicCode contains a concept for an observable entity, such as systolic blood pressure. For assertion findings, the TopicCode contains a code representing the condition, allergy, or other item being asserted. In all cases, the TopicCode describes the topic independent of the context of the action or the finding.

MedicationDispensedStatement

Indicates that a medication product has been dispensed for a named person/patient. This includes a description of the medication product (supply) provided and the instructions for administering the medication. The medication dispense is the result of a pharmacy system responding to a medication order.

Based On ClinicalStatement

StatementTopic must be a MedicationDispenseTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
StatementContext must be a PerformedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
SourceOfInformation optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationDispenseRequestedStatement [Entry]

An order for a medication to be dispensed and instructions for use.

Based On ClinicalStatement

StatementTopic must be a MedicationDispenseTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
StatementContext must be a RequestedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
RequestedContext
         where  Status must be from http://hl7.org/fhir/ValueSet/medication-request-status
         where  PriorityRank must be from http://hl7.org/fhir/ValueSet/medication-request-priority
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
SourceOfInformation optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationDispenseTopic [Entry]

The action of ordering and deliving a medication to the party responsible for administering the medication.

Based On MedicationTopic

NumberOfRefillsAllowed optional The maximum number of times the dispense can be repeated. For medication dispense, this integer does NOT include the original order dispense. This means that if an order indicates dispense 30 tablets plus 3 repeats, then the order can be dispensed a total of 4 times and the patient can receive a total of 120 tablets.
QuantityPerDispense optional The amount that is to be dispensed for one fill.
SupplyDuration optional Identifies the period time over which the supplied product is expected to be used, or the length of time the dispense is expected to last.
Medication required A type of prescription drug or over-the-counter drug that is used to prevent, treat, or relieve symptoms of a disease or abnormal condition, but excluding vaccines.
Dosage optional The dosage of the medication, prescribed or taken.
Category optional A class or division of people or things having particular shared characteristics
TopicCode required The concept representing the finding or action that is the topic of the statement. For action topics, the TopicCode represents the action being described. For findings, the TopicCode represents the 'question' or property being investigated. For evaluation result findings, the TopicCode contains a concept for an observable entity, such as systolic blood pressure. For assertion findings, the TopicCode contains a code representing the condition, allergy, or other item being asserted. In all cases, the TopicCode describes the topic independent of the context of the action or the finding.

MedicationNonAdherenceReason

Reason that patient did not adhere to a medication regimen.

Value:  CodeableConcept must be from MedicationNonAdherenceReasonVS
A set of codes drawn from different coding systems, representing the same concept.

MedicationNotDispensedStatement

Indicates that a medication product has NOT been dispensed for a named person/patient. This may be a result of the timing out of an order or detection of pharmacist of duplicate prescription or other reason.

Based On ClinicalStatement

StatementTopic must be a MedicationDispenseTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
StatementContext must be a NotPerformedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
SourceOfInformation optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationNotPrescribedStatement [Entry]

A record of a medication NOT being prescribed. Recorded only when deviating from the normal expectation, care plan, or standard of care.

Based On ClinicalStatement

StatementTopic must be a MedicationDispenseTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
StatementContext must be a RequestedAgainstContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
RequestedAgainstContext
         where  Reason must be from MedicationNotUsedReasonVS
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
SourceOfInformation optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationNotUsedStatement [Entry]

A record of a medication NOT used. Although usually not required, a medication not used is sometimes reported when deviating from normal expectation or care plan.

Based On ClinicalStatement

SourceOfInformation must be a PatientOrPractitionerOrRelatedPersonOrOrganization
optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
StatementTopic must be a MedicationUseTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
MedicationUseTopic
         where  Category should be from http://hl7.org/fhir/ValueSet/medication-statement-category
StatementContext must be a NotPerformedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
NotPerformedContext
         where  Reason must be from MedicationNotUsedReasonVS
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationTopic

Base class for actions involving medications, independent of context.

Based On ActionTopic

Medication required A type of prescription drug or over-the-counter drug that is used to prevent, treat, or relieve symptoms of a disease or abnormal condition, but excluding vaccines.
Dosage optional The dosage of the medication, prescribed or taken.
Category optional A class or division of people or things having particular shared characteristics
TopicCode required The concept representing the finding or action that is the topic of the statement. For action topics, the TopicCode represents the action being described. For findings, the TopicCode represents the 'question' or property being investigated. For evaluation result findings, the TopicCode contains a concept for an observable entity, such as systolic blood pressure. For assertion findings, the TopicCode contains a code representing the condition, allergy, or other item being asserted. In all cases, the TopicCode describes the topic independent of the context of the action or the finding.

MedicationUsedStatement [Entry]

A record of the use of a medication.

Based On ClinicalStatement

SourceOfInformation must be a PatientOrPractitionerOrRelatedPersonOrOrganization
optional The person or entity that provided the information in the entry, e.g. the subject (patient), medical professional, family member, device or software program, as distinct from who recorded the entry.
StatementTopic must be a MedicationUseTopic
required Compositional and reusable grouping of clinical statement attributes that make up the clinical focus of a statement. StatementTopic class attributes are aligned with SNOMED CT Concept Model attributes when such an overlap exists. Note that this class does not include contextual attributes such as the nature of the action (ordered, proposed, planned, etc...), the nature of the patient state being described (e.g., present, suspected present, absent), and the attribution of this information (the who, when, where, how, why of the information recorded).
MedicationUseTopic
         where  Category should be from http://hl7.org/fhir/ValueSet/medication-statement-category
StatementContext must be a PerformedContext
required Compositional and reusable grouping of clinical statement attributes that provides the context for the topic of a clinical statement. The StatementContext class aligns with the SNOMED CT Situations with Explicit Context (SWEC) Concept Model. The StatementContext provides the expressivity required to specify that an act was performed or not performed or that a finding was asserted to be present or absent for the given subject of information. It also often holds provenance information relevant to the context of the clinical statement. It is important to note that by default the context applies to the conjunction of the attribute specified in the statement. For instance, if a clinical statement has a topic describing a rash on left arm and a context of 'absent', then the statement states that the subject of interest did not have a rash on the left arm but might have had one on the right arm.
PerformedContext
         where  Status must be from http://hl7.org/fhir/ValueSet/medication-statement-status
SubjectOfInformation required The person or thing that this entry relates to, usually the Person of Record (see Entry). However, not all entries have health information specifically about the patient, but in different contexts, could refer to a fetus, family member (living or dead), device, location, organization, behavior, finding, condition, wound, or intervention. CIMI alignment: SubjectOfInformation is not a Participation -- unlike CIMI. There's no action to participate in. Participant has extra unnecessary attributes, such as 'onBehalfOf'.
Annotation 0 or more An added or follow-up note, often after the fact, that contains metadata about who made the statement and when.
RecordStatus optional Concept indicating the state of this record, e.g., 'entered in error'.
Recorded optional The person who entered the order on behalf of another individual for example in the case of a verbal or a telephone order.
Signed optional Provenance information specific to the signing of the clinical statement.
Cosigned 0 or more Provenance information specific to the cosigning of the clinical statement.
Verified 0 or more Provenance information specific to the verification process associated with this statement (e.g., verifier, when verified, etc.)

MedicationUseTopic

A course or dose of medication for a patient, independent of context of being recommended, used, or not used. Medication use can be reported, directly observed, or inferred from clinical events associated with orders, prescriptions written, pharmacy dispensings, procedural administrations, and other patient-reported information.

Based On MedicationTopic

Medication required A type of prescription drug or over-the-counter drug that is used to prevent, treat, or relieve symptoms of a disease or abnormal condition, but excluding vaccines.
Dosage optional The dosage of the medication, prescribed or taken.
Category optional A class or division of people or things having particular shared characteristics
TopicCode required The concept representing the finding or action that is the topic of the statement. For action topics, the TopicCode represents the action being described. For findings, the TopicCode represents the 'question' or property being investigated. For evaluation result findings, the TopicCode contains a concept for an observable entity, such as systolic blood pressure. For assertion findings, the TopicCode contains a code representing the condition, allergy, or other item being asserted. In all cases, the TopicCode describes the topic independent of the context of the action or the finding.

NumberOfRefillsAllowed

The maximum number of times the dispense can be repeated. For medication dispense, this integer does NOT include the original order dispense. This means that if an order indicates dispense 30 tablets plus 3 repeats, then the order can be dispensed a total of 4 times and the patient can receive a total of 120 tablets.

Value:  positiveInt

QuantityPerDispense

The amount that is to be dispensed for one fill.

Value:  SimpleQuantity A quantity where the comparator is not used, as defined in FHIR

SupplyDuration

Identifies the period time over which the supplied product is expected to be used, or the length of time the dispense is expected to last.

Value:  Duration The length of time that something continues.

TimingOfDoses

When doses of medication should be administered.

Value:  Timing A timing schedule that specifies an event that may occur multiple times. Timing offers a choice of multiple OccurrenceTime (used is used to specify specific times), or recurrence patterns.