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  HAS-BLED Bleeding Risk Score


Hypertension (1 point)

Abnormal liver function (1 point)

Abnormal renal function (1 point)

Stroke (1 point)

Bleeding tendency or predisposition (1 point)

Labile INRs in patients taking warfarin (1 point)

Elderly: age greater than 65 years (1 point)

Drugs: concomitant antiplatelet agent(s) or NSAIDS (1 point)

Drugs: alcohol abuse (1 point)

Important: Inputs must be complete to perform calculation.

Total Criteria Point Count:
Include literature references: Yes   No

  HAS-BLED Score Interpretation

0 points: 1.13 bleeds per 100 patient-years
1 point: 1.02 bleeds per 100 patient-years
2 points: 1.88 bleeds per 100 patient-years
3 points: 3.74 bleeds per 100 patient-years
4 points: 8.70 bleeds per 100 patient-years
5 to 9 points: Insufficient data (high risk)


  1. Lip GY. Implications of the CHA(2)DS(2)-VASc and HAS-BLED Scores for thromboprophylaxis in atrial fibrillation. Am J Med. 2011 Feb;124(2):111-4. PubMed ID: 20887966 PubMed Logo

Associated Medical Subject Headings [MeSH]
         Administration,   Age Factors,   Aged,   Alcohol Drinking,   Anticoagulants,   Atrial Fibrillation,   Diabetes Complications,   Drug Administration Schedule,   Female,   Heart Failure,   Hemorrhage,   Humans,   Hypertension,   International Normalized Ratio,   Male,   Oral,   Predictive Value of Tests,   Propensity Score,   Risk Assessment,   Risk Factors,   Stroke,   Thrombosis

Associated ICD10-CM Codes
   I74.9Embolism and thrombosis of unspecified artery
   I74.8Embolism and thrombosis of other arteries
   I67.9Cerebrovascular disease, unspecified
   I48.91Unspecified atrial fibrillation

Associated ICD9-CM Codes
   427.31Atrial fibrillation
   437.9Cerebrovasc disease nos
   444.89Arterial embolism nec
   444.9Arterial embolism nos


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