Field 24a - Date(s) of Service [lines 1–6]
“Date(s) of Service” indicates the actual month, day, and year the service(s) was provided. Grouping services refers to a charge for a series of identical services without listing each date of service.
NUCC INSTRUCTIONS: Enter date(s) of service, both the “From” and “To” dates. If there is only one date of service, enter that date under “From.” Leave “To” blank or re-enter “From” date. If grouping services, the place of service, procedure code, charges, and individual provider for each line must be identical for that service line. Grouping is allowed only for services on consecutive days. The number of days must correspond to the number of units in 24G.
When required by payers to provide additional narrative description of an unspecified code, NDC, contract rate, or tooth numbers and areas of the oral cavity enter the applicable qualifier and number/code/information starting with the first space in the shaded line of this field. Do not enter a space, hyphen, or other separator between the qualifier and the number/code/ information. The information may extend to 24G.
MEDICARE INSTRUCTIONS - Enter a 6-digit or 8-digit (MMDDCCYY) date for each procedure, service, or supply. When "from" and "to" dates are shown for a series of identical services, enter the number of days or units in column G. This is a required field. Return as unprocessable if a date of service extends more than 1 day, and a valid "to" date is not present.
Enter the Investigational Device Exemption (IDE) number when an investigational device is used in an FDA-approved clinical trial. Post Market Approval number should also be placed here when applicable.
For physicians performing care plan oversight services, enter the NPI of the home health agency (HHA) or hospice when CPT code G0181 (HH) or G0182 (Hospice) is billed.
Enter the 10-digit Clinical Laboratory Improvement Act (CLIA) certification number for laboratory services billed by an entity performing CLIA covered procedures.
For ambulance claims, enter the ZIP code of the loaded ambulance trip’s point-of-pickup.
NOTE: Item 23 can contain only one condition. Any additional conditions should be reported on a separate CMS-1500 claim form.
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