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Cooking with CQL Examples Sessions 51 100
Bryn Rhodes edited this page Aug 11, 2026
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This page contains the examples from Cooking with CQL sessions 51 through 100, in reverse chronological order. See Cooking with CQL Examples for the complete session index and the most recent sessions, and Cooking with CQL Examples - Sessions 1-50 for earlier sessions.
| Session | Date | Topics |
|---|---|---|
| 100 | 2026-04-23 | Cohort definitions in quality measurement; ballot reminders |
| 99 | 2026-03-26 | Using US Common in measures; US Realm Connectathon; CQL US ballot reminder |
| 98 | 2026-02-26 | CQL US Common ballot review; Liquid template updates; implications of null predicate testing |
| 97 | 2026-01-22 | Pregnancy, imaging, mammography, and Claim/ExplanationOfBenefit patterns; QDM support; IG Publisher support for measure processing |
| 96 | 2025-12-04 | Age and value-based stratifiers; timing best practices; patient age calculation, allergy, and observation patterns |
| 95 | 2025-09-25 | CQL R2 ballot results; CT scan representation; CQL US review; Connectathon 40 report |
| 94 | 2025-07-24 | CQL R2 ballot review; measure narrative review; Reference.type caveat; timezone testing; estimated denominator measures |
| 93 | 2025-06-26 | CAUTI rates and standardized infection ratios (SIR) |
| 92 | 2025-05-22 | Derived model info support; US Core 7.0.0 and QI-Core 7.0.0; FHIRCommon, USCoreCommon, QICoreCommon |
| 91 | 2025-04-24 | CQL 2.0 feature review; CQL Cheat Sheet; Common CQL Assets for FHIR (US-Based) ballot |
| 90 | 2025-03-27 | CQL errata publication; claim diagnosis and principal procedure; QI-Core 6 change review |
| 89 | 2025-01-23 | QI-Core 6 uplift: CQL uplift, test case uplift, MADiE measure creation from QI-Core 4 |
| 88 | 2024-12-12 | Activity extent; negation in FHIR; claim diagnosis; Using CQL With FHIR ballot |
| 87 | 2024-10-24 | Identifying acute kidney injury (CMS-832); CQL errata update |
| 86 | 2024-09-19 | Deep dive on stratifiers (principal diagnosis, gender, age group) |
| 85 | 2024-07-25 | Equality, equivalence, and nulls; consecutive SpO2 readings; terminology in CQL; medication daily dose |
| 84 | 2024-06-27 | Deep dive on sub-queries; allergy/intolerance category filter; aggregates with empty lists; aggregate clause |
| 83 | 2024-05-30 | Medication ordered and doNotPerform; Condition bodySite; primary code paths; overlaps before; quantity comparison |
| 82 | 2024-04-25 | Test on ART; HIV assay decision logic; HIV measure (tests vs. patients tested) |
| 81 | 2024-03-28 | Aggregate functions in CQL |
| 80 | 2024-02-22 | US Commons IG review; Using CQL With FHIR IG review; CQL next steps |
| 79 | 2024-01-25 | FHIRHelpers walkthrough; recently submitted issues (CQLIT-421/422/423) |
| 78 | 2023-11-30 | PC-07 numerator reporting; CMS1218 postoperative respiratory failure occurrence issue |
| 77 | 2023-09-28 | VS Code CQL plugin user guide |
| 76 | 2023-07-27 | Direct-reference-code encounters; MedicationRequest with Medication references |
| 75 | 2023-06-22 | Deep dive: intervals and lists |
| 74 | 2023-05-25 | Fluent functions; US Core tests in CQL |
| 73 | 2023-04-27 | Troubleshooting CQL expressions |
| 72 | 2023-03-23 | Deep dive: queries (retrieves, clauses, sub-clauses, singletons) |
| 71 | 2023-02-23 | Deep dive: operators and functions; UCUM units |
| 70 | 2023-01-26 | Authoring patterns by resource type |
| 69 | 2022-12-01 | Building shareable CQL: colorectal cancer screening example |
| 68 | 2022-10-27 | Deep dive on types, values, and choices |
| 67 | 2022-09-29 | Negation in QI-Core |
| 66 | 2022-07-28 | QI-Core profile elements and patterns |
| 65 | 2022-06-23 | CQL authoring using the VS Code plugin |
| 64 | 2022-05-26 | Shared library translations from the AU 2022 QDM publication |
| 63 | 2022-04-28 | Beginning CQL |
| 62 | 2022-03-24 | Community acquired pneumonia severity scores (CURB-65 and CRB-65) |
| 61 | 2022-02-24 | Aggregates, grouping, and having |
| 60 | 2022-01-27 | CQL errata review; QI-Core authoring review |
| 59 | 2021-12-02 | Cumulative medication duration in FHIR |
| 58 | 2021-10-28 | Shared CQL library repository concept; fluent functions |
| 57 | 2021-09-16 | Age calculations in QDM and FHIR; cumulative medication duration in QDM; UCUM best practice |
| 56 | 2021-07-29 | FHIR references; open source tooling stack; Library/$evaluate and $cql operations |
| 55 | 2021-06-24 | Blood pressure; age calculation; immunization not done |
| 54 | 2021-05-27 | Cumulative medication duration in FHIR; patterns and practices; stratification |
| 53 | 2021-04-22 | TSH testing monitoring; expand interval; resolving and tracing FHIR references; CQL exercises |
| 52 | 2021-03-24 | TSH testing every 8 weeks; bleeding events; composite measures with mixed-basis components |
| 51 | 2021-02-25 | Cumulative medication duration in FHIR; calculating months; week or wk? |
- Announcements
- Ballot Reminders
- Cohort Definitions in Quality Measurement
- US Realm Connectathon
- CQL US Ballot Reminder
- Using US Common in Measures
- Upcoming Connectathons
- CQL US Common Ballot Review
- Liquid Template Updates
- Implications of Null Predicate Testing
- Connectathon Highlights
- CMS dQM Public Comment Review Period
- FHIR IG Publisher Support for Measure Processing
- Pregnancy Patterns
- Imaging Patterns
- Mammography Patterns
- Claim and Explanation of Benefit Patterns
- QDM Support
- Age Stratifier Example:
- 1 week, 1 month, 1 year: How to characterize
- Value-based Stratifiers for non-subject-based measures
- Timing best-practice documentation
- Patient age calculation patterns
- Allergy patterns
- Observation patterns
- Examples
- Recording
- Connectathon 40 Report
- CQL R2 Ballot Results
- CT Scan Representation
- CQL US Review
- CMS Connectathon Report
- CQL R2 Ballot Review
- Measure Narrative Review
- Reference.type Caveat
- Timezone Testing
- Estimated Denominator Measures
- CMS Connectathon Outreach
- CAUTI: https://www.cdc.gov/nhsn/pdfs/pscmanual/7psccauticurrent.pdf
- Examples
-
Recording
- 4:07 - CMS Connectathon Outreach
- 8:44 - Catheter-Associated Urinary Tract Infection - CAUTI: https://www.cdc.gov/nhsn/pdfs/pscmanual/7psccauticurrent.pdf
- Derived Model Info Support
- USCore 7.0.0 and QICore 7.0.0
- FHIRCommon, USCoreCommon, QICoreCommon
- Examples
- Recording
- Reminder: CQL Common Assets for FHIR (US-Based) is currently in Ballot (https://hl7.org/fhir/us/cql/2025May/)
- CQL Cheat Sheet
- CQL 2.0 Feature Review
- Examples
-
Recording
- 3:41 - Reminder: CQL Common Assets for FHIR (US based) – Ballot
- 4:57 - CQL Cheat Sheet
- 5:40 - CQL 2.0 Feature Review Overview
- CQL Errata (Publication)
- Common CQL Assets for FHIR, US-Based (Upcoming Ballot)
- Claim Diagnosis and Principal Procedure
- Reprise QICore 6 Change Review
- Introduction and CQL/FHIR Background as Evolving eCQM Standards
- QI-Core 6 Uplift Presentation
- MADiE Measure Creation with QI-Core 6.0.0
- CQL Uplift
- Test Case Uplift
- MADiE Presentation -Drafting QI-Core 6 measures from QI-Core 4
- Connectathon Reminder
- Using CQL With FHIR Ballot
- Activity Extent
- Negation in FHIR
- Claim Diagnosis
- Examples
-
Recording
- 1:18 - Introduction and CQL/FHIR Background as Evolving eCQM Standards
- 4:19 - FHIR Connectathon Reminder Information (Jan 14-16, 2025)
- 4:54 - Using CQL With FHIR Ballot
- 5:41 - Activity Extent with examples
- 10:17 - Negation in FHIR & Use Cases
- 17:13 - Claim Diagnoses (change between QI-Core 4 & QI-Core 6)
- CQL Errata Update
- Identifying Acute Kidney Injury
- Examples
-
Recording
- 1:18 - Introduction and CQL-FHIR Background as Evolving eCQM Standards
- 3:57 - CQL Errata Updated Publication Information
-
4:40 - Measure Acute Kidney Injury (issues & proposed updates to logic for CMS-832 using QDM 5.6)
- 9:40 - Question regarding High/Low Creatinine test within the “Encounter with 1.5 Times Serum Creatinine Increase” expression
- 12:50 - Question regarding comparing the HighCreatinineTest.result.value to the function within the “Encounter with 2 Times Serum Creatinine Increase” expression
-
14:57 - Analysis of actual test data between Inpatient Hospitalization Days and Serum Creatinine Values: two scenarios identifying issues (Powerpoint)
- 18:39 - Scenario 2 - discussion and questions regarding meaning of test data.
- 23:37 - Review of issues using scenarios 1-3
- 25:25 - Proposed Updates to address the issues
- 28:16 - Question – Is it pulling one or multiple serum creatinine values?
- 29:12 - Question – Do you need a sort by if using “EarliestOf” function?
- 34:58 - Question – On Powerpoint scenario 2, could there be an overlapping of days for validation?
- 39:32 - Other Considerations
- 43:51 - Question – If referencing two different data types, (i.e., medication order and medication active), can you call a function using the entire data element name or do you have to use an alias name?
- Deep Dive on Stratifiers
- Equality, Equivalence, and Nulls in CQL
- Consecutive SPO2 Readings
- Terminology in CQL
- Medication Daily Dose
- Comment Period on Public Draft FHIR-based eCQMs for EH
- CMS Connectathon
- CQL Cheat Sheet
- Deep Dive on Sub-Queries
- Allergy/Intolerance Category Filter
- Aggregates with Empty Lists
- Aggregate Clause Question
- CQLIT-447 - Medication Ordered pattern and doNotPerform
- CQLIT-448 - Condition bodysite
- CQLIT-449 - Medication-related resources primary code path usage in retrieves
- CQLIT-450 - QICore Primary Code Path
- CQLIT-460 - Overlaps before clarification
- Quantity Comparison Question
- Examples
-
Recording
- 4:38 - Medication Ordered pattern and doNotPerform
- 6:48 - CQLIT-448 - Condition bodysite
- 11:50 - CQLIT-449 - Medication-related resources primary code path usage in retrieve?
- 19:15 - CQLIT-450 - QICore Primary Code Path
-
21:49 - CQLIT-460 - Overlaps before clarification
- 25:36 – Question: Where would we find the updated information to the specification regarding overlaps operator and the comparison of two interval values using a complete set of operations?
- 29:01 - Quantity Comparison Question
Agenda:
- Test on ART - Community Question
- HIV Assay - Community Question
- HIV Measure - Community Question
- Examples
-
Recording
-
4:49 – Question on representation of Stopping ART at Facility during the Measurement Period
- 7:47 – TestOnART examples
-
12:00 – Question on HIV Assay Decision Logic
-
12:19 – TestHIVAssay
- 12:22 – triggeredBy example
- 14:00 – Well Known Documentation Tags (link) example
- 15:43 – Identifier Conventions (link) example
- 17:01 – Formatting Conventions (link) example
- 18:08 – FHIR References examples
- 26:04 – Terminology for determining Assay 1 test
- 27:09 – ValueSet Usage
- 29:08 – Additional Filtering
- 31:01 – Patient Age
- 32:06 – Terminology Followup Question – Is there a way I can define that Custom valueset that contains a List of specific codes within CQL or does it need to be an actual valueset I have already defined outside CQL?
- 34:05 – Updated Queries
-
36:57 – Question/Discussion on HIV Measure Logic related to enumerating the number of HIV tests vs. the number of people tested
- 39:16 – Context features of CQL (link)
- 40:01 – Retrieve Context of CQL (link)
- 42:28 – TestHIVMeasure example – Define “Resulted HIV Test”
- 45:21 – Question – Where do you define “Active HIV Diagnosis”?
- 46:23 – Question - Why wouldn’t you define “Active HIV Diagnosis” with a condition right away to make sure it’s applicable to the measurement period?
-
12:19 – TestHIVAssay
-
4:49 – Question on representation of Stopping ART at Facility during the Measurement Period
Agenda:
- Aggregate Functions in CQL
- Examples
-
Recording
- 4:05 – Introduction to Aggregates in CQL
- 6:46 – Aggregate Capabilities
- 10:50 – Review of Observation Resource in FHIR
- Questions regarding Aggregate Queries:
- 12:33 – How many observations does this patient have?
- 13:55 – How many observations have an encounter?
- 14:06 – How many different kinds of observations does this patient have?
- 14:50 – Question: How will a duplicate observation kind type be counted?
- 17:07 – How many of each kind of observation does this patient have?
- 18:43 – Which kinds of observations have more than one observation?
- 20:12 – How many kinds of observations have more than one observation?
- 21:09 – For each kind of observation with more than one observation, what is the date and result of the most recent observation?
- 22:23 – Execute/Results – Aggregate Answers
Agenda:
- US Commons IG Review
- Using CQL With FHIR IG Review
- CQL Next Steps Review
- Examples
- Recording
Agenda - Review FHIRHelpers and examples of recently submitted issues
- Examples
-
Recording
- 4:14 – Agenda
- 4:56 – FHIR Helpers: Markdown file
- 5:40 – FHIR Helpers: FHIR and CQL
- 7:46 – FHIR Helpers: Library Declarations
- 8:11 – FHIR Helpers: ToInterval(FHIR.Period)
- 8:44 – FHIR Helpers: ToCalendarUnit
- 8:58 – FHIR Helpers: ToQuantity
- 10:00 – FHIR Helpers: ToQuantityIgnoringComparator
- 10:22 – FHIR Helpers: ToInterval(FHIR.Quantity)
- 10:46 – FHIR Helpers: ToRatio
- 10:53 – FHIR Helpers: ToInterval(FHIR.Range)
- 10:58 – FHIR Helpers: ToCode
- 11:07 – FHIR Helpers: ToConcept
- 11:23 – FHIR Helpers: ToValueSet
- 11:36 – FHIR Helpers: Conversion of Choice
- 12:38 – FHIR Helpers: Resolving References and FHIR Path Support
- 13:13 – FHIR Helpers: Slicing/Modifiers/Terminology Functions
- 13:40 – FHIR Helpers: ToString
- 15:31 – CQLIT-423: Day precision without expression containing 'date less than 1 day before date'
- 17:54 – CQLIT-422: Bonnie unexpected coverage 99% QDM NCQA
- 19:31 – CQLIT 421: Guidance in correcting the statement “Encounter with First Systolic Blood Pressure”
- 21:23 – Library ThreeConditions
Agenda - Review examples of recently submitted issues
- Examples
-
Recording
-
5:08 – PC-07 – Numerator reporting
- 6:18 – Background: Numerator
- 7:49 – Assessment
- 8:16 – Recommendations for Approaches
- 12:45 – Question: Operator Case Approach
- 15:41 – Questions: Is “EncounterCondition” considered a function?
- 16:58 – Discussion: Will multiple conditions and procedures be returned?
- 30:44 – Question: Are these supplemental data elements?
- 34:15 – Question: Return all encounter diagnoses that are not POA?
- 37:15 – Question: What does the return result look like?
- 43:20 – Discussion on CMS1218 Hospital Harm-Postoperative Respiratory Failure, Occurrence Issue with Numerator-Jira Ticket CQLIT-424
-
5:08 – PC-07 – Numerator reporting
Agenda - Review of the VS Code CQL Plugin User Guide
- Examples
-
Recording
- 4:26 - VS Code CQL Plugin User Guide (User Guide · cqframework/vscode-cql Wiki · GitHub)
- 4:35 - Installing Visual Studio (VS) Code (Link to install VS Code)
- 5:03 – Installing CQFramework Clinical Quality Language Extension
- 7:01 - Features
- 8:43 – Executing CQL
- 10:59 - Viewing ELM
- 12:17 – CQL Project Structure
- 14:20 – CQL Options
- 15:30 - Cloning a Repository
- 19:11 – Making Changes to a Library
- 20:38 - Committing Changes to a Library
- 23:15 - Pulling Changes from the Repository
- 24:57 - Using Terminology
- 29:49 - Adding Test Data
- 33:16 - Running Test Cases
Agenda - Accessing Encounters with Direct-reference codes and MedicationRequests with Medication references
- Examples
-
Recording
- 4:09 – Set up
- 5:02 – Direct Reference Code Encounters in QI-Core
- 10:40 – QI-Core Primary Code Path Discussion
- 18:50 – DRC approaches for QI-Core Encounter
- 40:12 – QI-Core Medication Request Medication Element
Please refer to updated information on the QI-Core 4.1.1 patterns page for the latest guidance for medication requests.
Agenda - Deep Dive - Intervals and Lists
- Examples
-
Recording
- 4:01 – Interval Values
- 14:07 – List Values
- 18:58 – Aggregates (List of Values)
- 20:30 – Lists of Strings
- 21:05 – Lists of Lists
- 22:15 – List of Intervals
- 25:05 – CQL IT Tracker Questions
- 30:59 – Question Regarding Search Paths
Agenda - Fluent Functions
- Examples
-
Recording
- 4:20 - Deep Dive on Fluent Functions
- 12:32 - Using Fluent Functions using expressions with common patterns
- 16:53 – US Core Tests in CQL
- 18:54 – US Core Elements - Allergy and Intolerance Profile
- 31:00 – US Core Elements – Conditions
- 33:45 – US Core Elements – Laboratory Results
- 34:42 – US Core Elements – Medication Request
- 41:08 – US Core Elements – Smoking Status
Agenda - Troubleshooting CQL Expressions
- Examples
-
Recording
- 4:05 – Medication Request Example
- 7:45 – Inpatient Criteria Testing
- 12:41 – Qualifying Encounters
- 36:23 – Message Operator
- 45:53 – Announcement: Session 67 Recording is now available on GitHub
- 46:56 – General Questions
- 4:05 – Medication Request Example
Agenda - Deep Dive - Queries
- Examples
-
Recording
- 4:19 – Query intro and setup
- 5:09 – Retrieves
- 9:30 – Query definition
- 10:40- Query Clauses
- 13:21 – With and Without clause
- 16:22 – Sort clause
- 18:08 – From clause
- 23:18 – Sub-clauses
- 28:53 – Let clause
- 33:07 – Singleton queries
- 38:36 – Questions and Answers
Agenda - Deep Dive - Operators and Functions
- Examples
-
Recording
- 4:15 – Operators and Functions in CQL
- 5:58 – Comparison Operators
- 7:14 – Equality vs Equivalence
- 9:06 – Arithmetic
- 10:28 – Rounding and Exponents
- 11:26 – String Manipulation
- 14:14 – Date and Time Comparison
- 15:07 – Date and Time Arithmetic
- 16:50 – Calendar Durations vs UCUM Units
- 17:10 – Duration and Difference
- 18:15 – Conditionals
- 20:24 – Operator Precedence
- 24:16 – Types of UCUM – Basic, Extended, and Arbitrary
Agenda - Authoring Patterns
- Examples
-
Recording
- 4:00 – Authoring Patterns Wiki Page
- 8:16 – Patient expression logic
- 14:01 – Encounters expression logic
- 16:21 – Conditions expression logic
- 25:23 – Observations expression logic
- 27:53 – Medications expression logic
- 33:47 – Procedures expression logic
- 34:07 – Devices expression logic
- 35:02 – Allergies expression logic
- 35:34 – Immunization examples
Agenda - Building Shareable CQL - Colorectal Cancer Screening Example
- Examples
-
Cooking with CQL Q&A
- Value set links in Clinical Quality Language
- Abbreviation 'Cs' as an alias
- 'Most recent' versus 'last' in Clinical Quality Language
- Clinical Quality Language evaluation service
-
Recording
- 5:50 - Colorectal Cancer Screening Example
- 9:54 - Flexible Sigmoidoscopy
- 13:28 - Value Set Links in CQL
- 14:48 - Abbreviation 'Cs' as an alias
- 19:37 - Constructing a Rationale
- 20:23 - Use of 'Most recent' versus 'last' in CQL
- 26:21 - Review 2021 Update of Colorectal Cancer: Screening Recommendation
- 32:55 - Applying 2021 Update of Colorectal Cancer: Screening Recommendation in CQL
- 37:00 - CQL Evaluation Service
Agenda - Deep Dive on Types, Values, and Choices
- Examples
-
Cooking with CQL Q&A
- Operational logic in Clinical Quality Language
- Casting with choice statements in Clinical Quality Language
- Using choice types in Clinical Quality Language
Negation in QI Core
- Examples
-
Cooking with CQL Q&A
- D.code reference in "Venous Foot Pumps (VFP)"
- Querying for Instances of negation using QI-Core
- Difference in meaning between two General Not Done defining statements
- Direct reference code in negation
- Importance of being able to query using QI-Core
- Use of direct reference codes for the negation expression in QDM measure
- Measuring negation using QI-Core
- Use of negation in future FHIR updates
- Testing negation in QI-Core at the September 2022 Connectathon
- Status information on negation in QI-Core
-
Recording
- 4:00 – Types of Negation
- 5:18 – Documentation of Events Not Done (What, When, Why, Negation)
- 7:26 – What did not occur element
- 8:35 – Negation Modeled in QI Core
- 10:49 – Two Main Types of Criteria for Negation
- 11:36 – General Not Done
- 14:59 – Q & A regarding General Not Done, value sets and reference codes
- 24:40 – Specific Not Done (direct reference code)
- 36:50 – Q & A regarding General Not done DeviceNotRequested
- 37:44 – New Quality Improvement Artifact Approach: Enforcing a profile on a retrieve
- 40:09 – Q & A regarding New Quality Improvement Artifact Approach
- 49:33 – Q & A regarding Profile Informed Authoring release
Review QICore Profile Elements and Patterns
- Examples
-
Cooking with CQL Q&A
- Capturing principal diagnosis in the Quality Improvement (QI)-Core 5.0 release
- September 2022 Connectathon testing
- Building measures for testing for the September 2022 Connectathon
This session will review CQL authoring using the VS Code plugin
- Examples
-
Cooking with CQL Q&A
- Use of the expand operator in the Visual Studio Code (VS Code) CQL plugin
This session will review the current proposed translations of shared libraries from the AU 2022 QDM publication
See the ecqm-content-r4-2022 repository for content for this session
- Examples
-
Cooking with CQL Q&A
- Execution error using Global Common Functions in Fast Interoperability Resources® (FHIR®) 4.0
- Writing a measure using Quality Improvement (QI)-Core in Fast Interoperability Resources® (FHIR®) 4.0
- Measure run using Quality Improvement (QI)-Core
- Locating 2022 electronic clinical quality measures (eCQMs)
Based on requests from participants, this session will be a beginner's introduction to CQL
- Beginning CQL
- Examples
-
Cooking with CQL Q&A
- Fast Healthcare Interoperability Resources® (FHIR®) encounter in a JAVA implementation
- Double quotes in Clinical Quality Language 1.5 Library
- AgeInYearsAt function in the Clinical Quality Language 1.5 Library
Topics:
- Community Acquired Pneumonia (CAP) Severity Scores (CURB-65 and CRB-65)
- Examples
- No Cooking with CQL Q&As from the 2022-03-24 session
Topics:
- Aggregates, Grouping, and Having
- Cooking with CQL Wiki and Feedback Request
- Examples
-
Cooking with CQL Q&A
- CountOfListOfNulls vs. LengthOfListOfNulls functions
- List Type specifiers in CQL
- Use of the group by clause in CQL
Topics:
- CQL Errata Review
- QICore Authoring Review
- Examples
-
Cooking with CQL Q&A
- Value Set functions in CQL Library v1.5
- Profile Authoring in FHIR resources
- Measure Authoring Development Integrated Environment (MADiE) support profile authoring
Topics:
- Cumulative Medication Duration in FHIR
- Examples
-
Cooking with CQL Q&A
- CumulativeMedicationsDuration data model
- CumulativeMedicationsDuration - MedicationRequestPeriod function
- CumulativeMedicationsDuration - Atom plug-in for Medication Dispense Data
- CumulativeMedicationsDuration - Collapse Interval per day
- MedicationDispensePeriod - Dispense.relevantdatetime
Topics:
- Focused on gathering community and stakeholder feedback on the concept of a shared CQL library repository
- Fluent Functions
- Examples
-
Cooking with CQL Q&A
- Fluent function - arithmetic operators
- Fluent function - normalize interval
- Fluent function - extensions in MAT
- Fluent function - QDM specification
- Fluent function - shared library
- Fluent function - defining intervals
- Fluent function - data requirements
- Fluent function - libraries with the same name
- Fluent function - overloading
Topics:
- Age Calculations in QDM and FHIR
- Cumulative Medication Duration Calculations in QDM
- fix for durationInDays as a Quantity
- fix for authorDatetime if start boundary is unspecified
- UCUM Best Practice
- Examples
-
Cooking with CQL Q&A
- CumulativeMedicationsDuration - calculating age and evaluating it against two integers
- CumulativeMedicationsDuration - combined and split doses
- CumulativeMedicationsDuration - metric dosing (mg/dose) instead of tablets or capsules
- CumulativeMedicationsDuration - tapering medications
- CumulativeMedicationsDuration - date/time vs just date
- CumulativeMedicationsDuration - authorDatetime vs just date
- MedicationOrderPeriod vs MedicationDispensePeriod when calculating CumulativeMedicationsDuration
- $cql operation and test case representation/packaging
- Pharmacy Workgroup - harmonizing NCDCP and FHIR
Topics:
- HL7/CMS Connectathon Review/Connectathon 28 CFP
- FHIR References Overview/Examples
- Open Source Tooling Stack Review
- Using Library/$evaluate and $cql Operations
- Examples
-
Cooking with CQL Q&A
- Library resource refresh tooling process
- IG refresh process
- Testing support for the Quality Measure IG
- Reference and the identifier resource patterns
- Resolving references within bundles
Topics:
- Blood Pressure Example
- Age Calculation Example
- Immunization Not Done Example
- Examples
-
Cooking with CQL Q&A
- FHIRHelpers.ToDate(Patient.birthDate) - Global Common Library v5.0 to calculate age
- Influenza Vaccine measure (CMS 147) - negation rationale pattern for Immunization Not Done queries
- ImmunizationNotDoneExample - define “Influenza Vaccine Not Administered”
- Difference between "GetBaseExtensions", "GetExtensions", and "GetExtension"
Topics:
- Cumulative Medication Duration in FHIR
- Patterns and Practices
- Stratification
- Examples
-
Cooking with CQL Q&A
- Using FHIR - Cumulative Medication Duration
- Using FHIR - Cumulative Medication Duration within the define function of the MedicationDispensePeriod
- Using FHIR - Cumulative Medication Duration with a RolloutIntervals function
- Measure Logic in CQL - Stratification
Topics:
- TSH Testing Monitoring
- Expand Interval Examples
- Resolving and Tracing FHIR References in CQL
- CQL Exercises
- Examples
-
Cooking with CQL Q&A
- Queries in CQL - Immune Check Inhibitor (ICI) therapy with Thyroid Stimulating Hormone (TSH) testing in overlapping measurement periods
- Queries in CQL - Therapy.relevantPeriod
- Queries in CQL - Immune Check Inhibitor (ICI) therapy Bins - expand operator
- Queries in CQL - library to illustrate patterns for accessing FHIR through references
- General CQL - CQL vs FHIRv4.0 nested structure
Topics:
- TSH Testing Every 8 Weeks
- Bleeding Events
- Composite Measure Calculation with mixed-basis components
- Examples
-
Cooking with CQL Q&A
- Queries in CQL - Immune Check Inhibitor (ICI) therapies Expressions
- Queries in CQL - TST Testing very 8 Weeks
- Measure Logic in CQL - Bleeding Events Encounters
Topics:
- Cumulative Medication Duration in FHIR
- Calculating Months
- Week or wk?
- Examples
-
Cooking with CQL Q&A
- Date and Time Calculation - Calculating the overall expected duration (days) of a medication request in FHIR (periodUnit)
- Date and Time Calculation - Calculating the cumulative period or start date for a single medication request in FHIR (validityPeriod or authoredOn)
Authoring Patterns - QICore v4.1.1
Authoring Patterns - QICore v5.0.0
Authoring Patterns - QICore v6.0.0
Cooking with CQL Q&A All Categories
Additional Q&A Examples
Developers Introduction to CQL
Specifying Population Criteria