Total carbamazepine level
99490 is the highest CPT code. 99999 does not exist. It is not a valid CPT. Sorry.
As of Jan 2012, code 73542 is an invalid CPT code.
AS far as I could tell from the CPT code book that is not a valid code
magnesium level
What is proc code 58970
CPT Code 99223- Initial hospital care, per day, for the evaluation and management of a patient.
one of two types of cpt codes. stand alone codes give a full description
Periodic comprehensive preventive medicine
sacrum and coccyx
80156 is a procedure code for a Tegretol level. Typical diagnosis codes are in the 296.xx series indicating bipolar disorder, but any condition requiring Tegretol, such as tic doloureaux, may also be used.
stand-alone
A Stand alone code is a CPT code that full description of the situation that you are coding. Ex. 26010 Drainage of finger abscess