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Percent of Medicare Enrollees with Cerebral Aneurysms Treated with Coiling, by Type of Aneurysm
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    • YEAR:
    • Type of Aneurysm:

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        • FOOTNOTES:
        • After establishing our inclusion criteria, we examined the incidence of each event over time between 2007 and 2012. We assessed rates by each year individually. These rates were adjusted for changes in age, sex, and race occurring over time using the national standard Medicare population.

        • DENOMINATOR DEFINITION:
        • Unruptured aneurysms: ICD-9 diagnosis code 437.3
          Subarachnoid hemorrhage: ICD-9 diagnosis code 430.xx
          Not in the same index admission as:
          A. 094.87 (syphilitic aneurysm)
          B. 437.4 (cerebral arteritis), 437.5 (Moyamoya disease)
          C. 39.53, 92.30, 747.81 (AVM)
          D. 800.0-801.9, 803.0-804.9, 850.0-854.1, 873.0-873.9 (traumatic hemorrhage)

        • NUMERATOR DEFINITION:
        • ICD-9 procedure codes 39.52 and 88.41 (excluding 39.51 in same hospitalization)
          39.72, 39.79




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