1) The procedure is considered Unilateral or Bilateral-This means you can either bill for it once, if it is both eyes or ammend it with an RT or LT modifier
EX: 92132 (for both eyes) 92132-RT( for right eye only) or 92132-LT (for left eye only)
2) The procedure is considered to mutually exclusive of 92285 (External Ocular Photography For Documentation of Medical Progress ) which means you can bill the 92132 with the 92285 but you must have a separate diagnosis code for the 92285 and MAY have to use a 59 modifier.
3)Never bill 92132,92133 or 92134 on the same day, bring your patients back on separate days to do these procedure as they are generally done with the same machine and therefore will be considered to be one procedure. If you were to bill for all of these on the same day, you will find that you will most likely only be paid for the lowest reimbursing procedure.
4) If you do decide to do the patient a favor and perform 92132, 92133 and 92134 all on the same day, bill for the highest reimbursing procedure only.
5) If for some reason you do get paid for any of the above codes bilaterally or more than one of the above codes, this money will be taken back by the insurance company during a coding audit and will likely reduce the payable amount of future checks.
6) The above rules apply to Medicare only. Though other insurance companies generally follow the medicare reimbursement rules, each insurance company may have separate reimbursement policies that do not necessarily follow what is laid out here. It would be a good idea to call Provider Services of the insurance company you plan on billing to find out what their individual reimbursement policies are for the above codes.
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