Interactive tool
Calculate the VCSS
Assess one leg at a time, according to the 2010 revision. The maximum score is 30.
How to use it
Instructions
The ten attributes and grading criteria
| Attribute | 0 — none | 1 — mild | 2 — moderate | 3 — severe |
|---|---|---|---|---|
| Pain or other discomfort | None | Occasional, not restricting activity | Daily, interfering with but not preventing regular activities | Daily, limiting most regular activities |
| Varicose veins (≥ 3 mm, standing) | None | Few, scattered; includes corona phlebectatica | Confined to calf or thigh | Involving calf and thigh |
| Venous oedema | None | Limited to foot and ankle | Above the ankle but below the knee | To the knee and above |
| Skin pigmentation | None or focal | Limited to the perimalleolar area | Diffuse over the lower third of the calf | Wider distribution, above the lower third |
| Inflammation | None | Limited to the perimalleolar area | Diffuse over the lower third | Wider distribution, above the lower third |
| Induration | None | Limited to the perimalleolar area | Diffuse over the lower third | Wider distribution, above the lower third |
| Active ulcers: number | 0 | 1 | 2 | ≥ 3 |
| Active ulcer: duration (longest) | None | < 3 months | 3 months – 1 year | Not healed for > 1 year |
| Active ulcer: size (largest) | None | Diameter < 2 cm | Diameter 2 – 6 cm | Diameter > 6 cm |
| Use of compression therapy | Not used | Intermittent use of stockings | Stockings worn most days | Full compliance with stockings |
Scoring notes
- Assess one leg at a time: a bilateral report should give two separate scores.
- Pigmentation presumes a venous origin: do not count focal pigmentation over varicose veins, or pigmentation from other chronic diseases.
- Inflammation means more than recent pigmentation: erythema, cellulitis, venous eczema, dermatitis. Induration includes chronic oedema with fibrosis, hypodermitis, atrophie blanche and lipodermatosclerosis.
- Compression: the item measures adherence, not the indication. A high score means the patient wears stockings regularly, i.e. needs significant support to control the disease. In the 2010 revision, leg elevation is no longer part of the item, as it was in the original 2000 version.
- The three ulcer items refer to active ulcers (duration of the longest, size of the largest); a healed ulcer does not count.
- The 2010 revision made the definitions more operational than the original 2000 version, clearly improving inter-observer agreement.
Clinical references
Guidelines and interpretation
How to read the score
The VCSS has no formal diagnostic thresholds: it is a continuous measure of severity. The bands below are a practical reference widely used in the literature, not an official classification.
| Score | Indicative severity |
|---|---|
| 0 – 4 | Mild disease |
| 5 – 9 | Moderate disease |
| 10 – 14 | Severe disease |
| ≥ 15 | Very severe disease |
The right use: comparison over time
The value of the VCSS lies in the difference between two assessments of the same patient. A reduction of 3–4 points after treatment is regarded as clinically significant. In registries and outcome studies the VCSS is the standard indicator for documenting the result of thermal or non-thermal saphenous ablation, sclerotherapy, phlebectomy, iliocaval venous stenting and structured compression therapy.
The SVS/AVF guidelines on varicose veins and venous ulcers recommend recording the VCSS at baseline and at follow-up in treated patients, together with the CEAP class and a quality-of-life questionnaire.
Relationship with the other tools
| Tool | What it does | Sensitivity to change |
|---|---|---|
| CEAP | Describes and classifies clinical signs, etiology, anatomy and pathophysiology | Low: the C class rarely changes after treatment |
| VCSS | Grades overall clinical severity | High: it is the reference tool for measuring outcome |
| Villalta | Diagnoses and grades post-thrombotic syndrome | Moderate, specific to the post-thrombotic picture |
| CIVIQ-20, AVVQ, VEINES-QOL | Measure quality of life as perceived by the patient | High, but on a different dimension from the clinical one |
A successfully treated C6 patient with a healed ulcer becomes C5: the C class records change only coarsely and never falls below the highest level reached. Two patients who are both C2 may have completely different disease in terms of extent, symptoms and functional impact. The VCSS was created precisely to make this difference visible.
Limitations
- The compression item is debated: it measures adherence to treatment, not a sign of disease, and some authors exclude it from analyses.
- The score gives the same weight to pain and oedema, which have very different impacts on quality of life.
- It discriminates poorly in mild disease, where most patients cluster between 2 and 5 points.
References
Sources
- Rutherford RB. et al., J Vasc Surg 2000 — Venous severity scoring: an adjunct to venous outcome assessment.
- Vasquez MA. et al., J Vasc Surg 2010 — Revision of the venous clinical severity score: venous outcomes consensus statement (American Venous Forum).
- Gloviczki P. et al., J Vasc Surg 2011; J Vasc Surg Venous Lymphat Disord 2023–2024 — SVS/AVF (and AVLS) clinical practice guidelines for varicose veins and chronic venous disease.
- Passman MA. et al., J Vasc Surg 2011 — Validation of Venous Clinical Severity Score with other venous severity assessment tools.
Quick-reference tool for healthcare professionals. It does not replace the original guidelines, the summaries of product characteristics or the specialist's clinical judgement. All calculations run in the browser: no patient data is transmitted to or stored on any server.