Caprini VTE Risk Score Calculator

Caprini Risk Assessment Model (2005) for venous thromboembolism risk and prophylaxis guidance.

For educational and clinical reference. Not a substitute for medical judgment. See the medical disclaimer.

Age

Surgery type

BMI > 25 kg/m²

Swollen legs

Varicose veins

Sepsis (< 1 month)

Serious lung disease incl. pneumonia (< 1 month)

Oral contraceptive or hormone replacement therapy

Pregnancy or postpartum (< 1 month)

History of unexplained or recurrent spontaneous abortion

Acute myocardial infarction

Congestive heart failure (< 1 month)

History of inflammatory bowel disease

Medical patient currently at bed rest

Immobilizing plaster cast (< 1 month)

Central venous access

Malignancy (present or previous)

Confined to bed > 72 hours

History of DVT or PE

Family history of thrombosis

Known thrombophilia (Factor V Leiden, prothrombin 20210A, lupus anticoagulant, antiphospholipid, hyperhomocysteinemia, HIT)

Stroke (< 1 month)

Hip, pelvis, or leg fracture

Acute spinal cord injury / paralysis (< 1 month)

Score

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Interpretation

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References

Caprini JA. Thrombosis risk assessment as a guide to quality patient care. Dis Mon. 2005;51(2-3):70-78.
Gould MK, Garcia DA, Wren SM, et al. Prevention of VTE in nonorthopedic surgical patients: ACCP guidelines. Chest. 2012;141(2 Suppl):e227S-e277S.

How to use

Select age and surgery type, then mark each risk factor that applies.
The cumulative Caprini score and risk band update instantly.
Use the band to guide prophylaxis after assessing bleeding risk.

Frequently asked questions

What is the Caprini score?

A cumulative risk-factor score (2005 model) that stratifies surgical and medical patients for venous thromboembolism and guides prophylaxis intensity.

How is the Caprini score interpreted?

0 = lowest risk, 1–2 = low, 3–4 = moderate, ≥ 5 = high risk. Pharmacologic prophylaxis is generally recommended for scores ≥ 5 (and considered at 3–4).

Which Caprini version is this?

This calculator uses the widely validated 2005 Caprini Risk Assessment Model. Later modified versions exist with slightly different point values.

Does the score replace bleeding-risk assessment?

No. Prophylaxis decisions weigh VTE risk (Caprini) against bleeding risk; high Caprini scores still require an individualized bleeding assessment.

Last updated June 28, 2026