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EXHIBIT 12
HCA INC.
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
FOR THE QUARTERS AND SIX MONTHS JUNE 30, 2001 AND 2000
(DOLLARS IN MILLIONS)
<Table>
<Caption>
QUARTER SIX MONTHS
------------ -------------
2001 2000 2001 2000
---- ----- ------ ----
EARNINGS:
Income (loss) before minority interests and income taxes.... $460 $(341) $1,032 $177
Fixed charges, excluding capitalized interest............... 168 162 337 306
---- ----- ------ ----
$628 $(179) $1,369 $483
==== ===== ====== ====
FIXED CHARGES:
Interest charged to expense................................. $139 $ 136 $ 281 $255
Interest portion of rental expense and amortization of
deferred loan costs....................................... 29 26 56 51
---- ----- ------ ----
Fixed charges, excluding capitalized interest............... 168 162 337 306
Capitalized interest........................................ 3 6 7 11
---- ----- ------ ----
$171 $ 168 $ 344 $317
==== ===== ====== ====
Ratio of earnings to fixed charges.......................... 3.67 (a) 3.98 1.52
</Table>
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(a) For the quarter ended June 30, 2000, earnings are inadequate to cover fixed
charges by $347 million.