EXHIBIT 12
HCA INC.
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
(UNAUDITED)
(DOLLARS IN MILLIONS)
<Table>
<Caption>
YEAR ENDED DECEMBER 31,
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2004 2003 2002 2001 2000
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EARNINGS:
Income before minority interests and income taxes...... $2,141 $2,306 $1,603 $1,596 $ 600
Fixed charges, exclusive of capitalized interest....... 686 611 558 647 663
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$2,827 $2,917 $2,161 $2,243 $1,263
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FIXED CHARGES:
Interest charged to expense............................ $ 563 $ 491 $ 446 $ 536 $ 559
Interest portion of rental expense..................... 123 120 112 111 104
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Fixed charges, exclusive of capitalized interest....... 686 611 558 647 663
Capitalized interest................................... 28 49 37 15 21
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$ 714 $ 660 $ 595 $ 662 $ 684
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Ratio of earnings to fixed charges..................... 3.96 4.42 3.63 3.39 1.85
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</Table>