Modifier 27 fact sheet
Hospitals may append modifier 27 to the second and subsequent outpatient hospital E/M code to indicate the E/M service is a...
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UB-04 billing information
The Official UB-04 Data Specifications Manual 2025, copyrighted by the American Hospital Association, is the only official...
Coding resources: ICD-10, CPT, and HCPCS
Find resources to assist with ICD-10 compliance as well as CPT and HCPCS information.
Utilizing modifier 91: Repeat clinical laboratory tests
View this article for instructions on how and when to use modifier 91.
Bilateral indicators
The Medicare physician fee schedule status indicators for bilateral services should be used to determine if the procedure is...
Anatomical modifiers
Procedures performed during separate patient encounters, at separate anatomic sites, or on separate specimens, may require a...
Modifier 50
Modifier 50 applies to bilateral procedures performed on both sides in the same operative session, except as indicated. Avoid...
Modifier AI
The principal physician of record appends modifier “-AI” to their initial hospital care or nursing facility visit code. All...
Utilization of modifier 76: Repeat procedures
Modifier 76 used to report repeat procedure or service by same physician or other qualified health care professional the same...