EBMcalc Medical Calculator

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:

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)

Data action

Include literature references: Yes No

References

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

Associated Medical Subject Headings [MeSH]

Associated ICD10-CM codes

I74.9

Embolism and thrombosis of unspecified artery

I74.8

Embolism and thrombosis of other arteries

I67.9

Cerebrovascular disease, unspecified

I48.91

Unspecified atrial fibrillation

Associated ICD9-CM codes

427.31

Atrial fibrillation

437.9

Cerebrovasc disease nos

444.89

Arterial embolism nec

444.9

Arterial embolism nos

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