Even though we're only a few fields away from the end of our segment on medical billing and the GU0 record, these last few fields are so complex and confusing, that the explanations of how to fill them can get rather lengthy. We've tried to simplify this series so that it's at least a little easier to understand than the DMERC manual, which was most likely written for literary geniuses. In this installment of our electronic billing series and the GU0 record, we continue our review with field number 66.

GU0 field 66, positions 282 - 285, is Reply NUM L04 N05. This field is the reply to the fifth question on any DMERC certification requiring a four position numeric response. The following forms are supported for this field. For form 01, the valid responses are 0000 - 9999. For form 04, the valid responses are 0001 - 0099. For form 10, the valid responses are 0000 - 0007. No other forms are supported.

Form 01 is the maximum width in centimeters of the ulcer number two. Form 04 is the number of months prior to getting the device that the patient had a fusion surgery that failed. Form 10 is the days per week that lipids are administered.

Form 01 is question number 21.F. Form 04 is question 10.C. Form 10 is question 4.G.

GU0 field 67, positions 286 - 289, is Reply NUM L04 N06. This field is the reply to the sixth question on any DMERC certification requiring a four position numeric response. The following forms are supported for this field. For forms 01 and 10, the valid responses are 0000 - 9999. For form 04, the valid responses are 0001 - 0099. No other forms are supported.

Form 01 is the maximum length in centimeters of the ulcer number three. Form 04 is the number of months prior to getting the device that the patient had a fusion surgery that was multi level. Form 10 is the calories per day.

Form 01 is question number 21.H. Form 04 is question 11.B. Form 10 is question 11.

GU0 field 68, positions 290 - 293, is Reply NUM L04 N07. This field is the reply to the seventh question on any DMERC certification requiring a four position numeric response. The following forms are supported for this field. For form 01, the valid responses are 0000 - 9999. No other forms are supported.

Form 01 is the maximum width in centimeters of the ulcer number three. Form 01 is question number 21.I.

One word of note about the form question numbers. These forms are regularly updated by the AMA. It is critical that you have the correct version of the form, which will have a date on the form itself. Please make sure that date matches the date that is posted on the carrier web site.