FIELD 24G- Days or Units [lines 1–6]
“Days or Units” is the number of days corresponding to the dates entered in 24A or units as defined in CPT or HCPCS coding manual(s).
NUCC INSTRUCTIONS: Enter the number of days or units. This field is most commonly used for multiple visits, units of supplies, anesthesia units or minutes, or oxygen volume. If only one service is performed, the numeral 1 must be entered.
Enter numbers left justified in the field. No leading zeros are required. If reporting a fraction of a unit, use the decimal point.
Anesthesia services must be reported as minutes. Units may only be reported for anesthesia services when the code description includes a time period (such as “daily management”).
MEDICARE INSTRUCTIONS: Enter the number of days or units. This field is most commonly used for multiple visits, units of supplies, anesthesia minutes, or oxygen volume. If only one service is performed, the numeral 1 must be entered.
Some services require that the actual number or quantity billed be clearly indicated on the claim form (e.g., multiple ostomy or urinary supplies, medication dosages, or allergy testing procedures). When multiple services are provided, enter the actual number provided.
For anesthesia, show the elapsed time (minutes) in item 24g. Convert hours into minutes and enter the total minutes required for this procedure.
For instructions on submitting units for oxygen claims, see chapter 20, section 130.6 of this manual.
Beginning with dates of service on and after January 1, 2011, for ambulance mileage, enter the number of loaded miles traveled rounded up to the nearest tenth of a mile up to 100 miles. For mileage totaling 100 miles and greater, enter the number of covered miles rounded up to the nearest whole number miles. If the total mileage is less than 1 whole mile, enter a “0” before the decimal (e.g. 0.9). See Pub. 100-04, chapter 15, §20.2 for more information on loaded mileage and §30.1.2 for more information on reporting fractional mileage.
NOTE: This field should contain an appropriate numerical value. The A/B MAC (B) should program their system to automatically default "1" unit when the information in this field is missing to avoid returning as unprocessable, except on claims for ambulance mileage. For ambulance mileage claims, contractors shall automatically default “0.1” unit when total mileage units are missing in this field.
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