Hospital Outpatient Reporting Part V, Use of CPT Modifiers -25, -27, -50, -51, and HCPCS Level II Modifiers (May 2003)

Why This Topic Matters

Modifier use can affect outpatient claim processing, payment, and edits under OPPS. Understanding the scope of the guidance helps hospital coding and billing teams identify when the article’s policy discussion is relevant to outpatient reporting workflows.

Article Sections

1. May 2003 pages 7-16

   Introductory publication information for the article installment and its place in the multipart series.

2. Coding Communication

   Overview of the article’s focus on communication through modifier reporting in hospital outpatient claims, along with the broader OPPS context.

3. Use of CPT/HCPCS Level II Modifiers Approved for Hospital Outpatient Reporting

   General discussion of CMS approval and implementation of outpatient modifier reporting, including the role of modifiers in claims processing.

4. CMS Policy (General Use of Modifiers)

   Policy discussion covering general modifier principles, reporting considerations, and the relationship between modifiers and outpatient claim edits.

5. When to Use Other HCPCS Level II Modifiers Approved for Outpatient Hospital Reporting?

   Discussion of selected Level II modifier use in outpatient reporting and how specificity is applied in facility claims.

6. Surgical Procedure On Inpatient List Performed on Emergency Basis

   Coverage of special outpatient billing circumstances involving inpatient-list procedures, patient status, and CMS-created reporting guidance.

7. Documentation Requirements

   Summary of the documentation elements described for certain outpatient claims involving special procedure and patient-status circumstances.

8. Multiple Outpatient Hospital E/M Encounters on the Same Date (Modifier -27) / Use of Modifier -25

   Guidance on outpatient evaluation and management encounters on the same date, including CMS reporting context and claim-processing considerations.

9. Bilateral Surgery (Modifier -50)

   Discussion of bilateral reporting concepts, CMS bilateral policy context, and how outpatient modifiers relate to paired-body-part procedures.

10. CMS CPT Code "Bilateral Procedure" Designation

    Explanation of CMS bilateral designation categories and how outpatient coding references them within the modifier framework.

11. When to use HCPCS Level II Modifiers -LT and -RT vs Modifier '-50'?

    Comparison of laterality-specific Level II modifiers with bilateral reporting in the outpatient setting.

12. Multiple Procedures (Modifier -51)

    Brief informational discussion of the multiple procedure modifier in the context of OPPS reporting and why it is not used in the same way as in other settings.