HAS-BLED score: bleeding risk

HAS-BLED describes the 1-year risk of major bleeding in patients with atrial fibrillation, as derived in the original study by Pisters et al. (2010).

⚠︎ Learning tool for medical education – not for use in patients or for treatment decisions.

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–points

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Classification (original publication)

ScoreClassification (original publication)
0–2Not high bleeding risk
≥ 3High bleeding risk – category according to Pisters 2010

Criteria

HAS-BLED stands for hypertension, abnormal renal or liver function, stroke, bleeding, labile INR, elderly, and drugs and alcohol. Each criterion counts one point; the total ranges from 0 to 9.

References

  1. Pisters R et al. A novel user-friendly score (HAS-BLED) to assess 1-year risk of major bleeding in patients with atrial fibrillation. Chest 2010;138:1093–100. · PubMed

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InnereFuchs bundles Wells, CHA₂DS₂-VA, HAS-BLED, CRB-65, qSOFA, Child-Pugh, eGFR and more – together with flashcards and exam questions.

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Intended purpose: learning tool for medical education only. Not intended for use in patients or for diagnostic or treatment decisions; not a medical device. Calculations follow the cited original publications; no guarantee of completeness or correctness. Last updated: 09/2026 · Dr. Pascal Bafteh