US · guidance
CMS Pub. 100-04, ch. 26, § 10.9
Miles/Times/Units/Services (MTUS)
Miles/Times/Units/Services (MTUS) count and MTUS indicator fields are on Part B
Physician/Supplier Claims. These fields are documented in the CMS National Claims
History Data Dictionary.
Shared systems are to put MTUS count and MTUS indicators on all claims at the line
item level.
The purpose of the MTUS Count Field on the line item is to document additional
information reflecting certain volumes related to indicators. In most cases, the value in
this field will be the same as in the Service Count Field on the line item; however, for
services such as anesthesia the field values will differ. In this case, the service count field
will likely contain a value of 1 for the occurrence of the surgery while the MTUS Count
Field will contain the actual time units that the anesthesiologist spent with the patient in
15 minute increments or a fraction thereof.
The purpose of the MTUS Indicator Field is to indicate what the value entered into the
MTUS Count Field means. There are 6 indicator values, as follows:
Indicator Description
0 No allowed services
1 Ambulance transportation miles
2 Anesthesia Time Units
3 Services
4 Oxygen units
5 Units of Blood
Examples of how to code these fields are specified in §10.9.1 below.
History
(Rev. 1970, Issued: 05-21-10, Effective: 10-01-2010, Implementation: 10-04-10)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
e241df5cb691f5863895d39c08a8bc26bfba1f8d210cd84b590346ac1acb8d9a
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