CHA₂DS₂-VASc Stroke Risk Score — FHIR Questionnaire Template

Six yes/no criteria and the age with the CHA₂DS₂-VASc score (0–9) for stroke risk in atrial fibrillation; a higher score means a higher risk.

Scoring

Points: heart failure 1, hypertension 1, age 75 or older 2, diabetes 1, previous stroke or TIA 2, vascular disease 1, age 65 to 74 1, female sex 1 (0–9). The score appears once the age is entered; an unanswered criterion counts as No.

Questions

1. Congestive heart failure or left ventricular dysfunction
2. Hypertension
3. Age (years)
4. Diabetes mellitus
5. Previous stroke, transient ischemic attack or thromboembolism
6. Vascular disease (previous myocardial infarction, peripheral artery disease or aortic plaque)
7. Female sex

Calculated results

• CHA₂DS₂-VASc score (0–9)

Source and license

Source: Lip et al. 2010, Chest 137:263. Codes: LOINC. (link)

License: Original wording written for this builder; covered by the project license (non-commercial use with attribution; commercial use needs written permission). Formulas are published methods; see the source. (link)

Provided to save authoring effort, not as medical advice — confirm the scale and its cut-offs for your use case.

Use it

1. Download the FHIR Questionnaire JSON, or
2. open the Builder, choose + Add → From template…, search for “CHA₂DS₂-VASc Stroke Risk Score” and insert it. It arrives as one titled group with its calculations wired, and you can keep editing it.

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This material contains content from LOINC (loinc.org). LOINC is copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the LOINC license.