There were some changes made a few months ago as to how claims are filled out specific to California Worker’s Comp billing only. Relative to a CMS1500 claim form, box 1a no longer has the claim #, instead it has the patient’s social security # or, if unknown, 9-9’s (do not enter dashes in either case). In box 4, goes the name of the employer. This actually makes sense because they are the insured, the patient is the beneficiary. Of course you would check the box 8 status as OTHER. Then, in box 11 is where you put the claim # for the work comp case. If you have have an authorization #, you should always enter it in box 23. Then, on the newest claim form version in box 24j, you will see a top and a bottom; the top is shaded, the bottom is not. In the top box now goes the TAXONOMY code for acupuncture, this is: zz 171100000x and in the box beneath it, next to NPI, goes your NPI number. If you belong to a group, you would use your individual NPI here and then the group NPI in box 33a below. These are the only changes to how the claim form is completed, all other instructions we’ve given in the book on how to complete a claim , etc. still apply except for what was indicated above. Happy billing!