Applies to Medicaid only 

Claims using these modifiers submitted for members of other plans will be denied.

Modifier UD: Treated and released

When billing for the attending emergency department (ED) physician Evaluation and Management (E&M) service, you must use the modifier UD with the appropriate E&M procedure code to designate that the patient was released (discharged) from the ED.

• Place this modifier in the first modifier position on the claim line to ensure correct processing.
• The UD modifier indicates that the physician billing for the ED E&M service was the attending ED physician, allowing the appropriate fee screen to be used.
• Do not use the UD modifier with E&M services provided by other physicians in the ED.
• Do not use the UD modifier for services billed in addition to the E&M service by the attending ED physician.

Modifier UA: Treated and admitted/transferred

When billing for the attending ED physician E&M service, you must use the modifier UA with the appropriate E&M procedure code to designate that the patient was admitted to the hospital or transferred to another hospital from the ED.

• Place this modifier in the first modifier position on the claim line to ensure correct processing.
• The UA modifier indicates the physician billing for the ED E&M service was the attending ED physician, allowing the appropriate fee screen to be used.
• Do not use the UA modifier with E&M services provided by other physicians in the ED.
• Do not use the UA modifier for services billed in addition to the E&M service by the attending ED physician.