Hospital outpatient services and Modifiers -25 and -27

Modifier -27 According to Program Memorandum (PM) Transmittal A-01-80 CMS will recognize and accept the use of modifier -27 on hospital Outpatient Prospective Payment Service (OPPS) claims effective for services on or after October 1, 2001. Modifier -27 was originally created to identify a hospital facility reporting a situation of a patient receiving multiple evaluation and management services performed by the same or different physician(s) in multiple outpatient hospital settings on the same day. However, it wasn’t approved for usage by CMS until recently. The general guidelines for Modifier -27 are as follows: A. Modifier -27 should be...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article covers hospital outpatient service reporting with emphasis on two evaluation and management modifiers, along with the CMS transmittal context and related outpatient claim concepts. It is aimed at hospital coders, billers, compliance staff, and revenue cycle teams who need a general understanding of when these modifiers are discussed in outpatient settings and what broader claim-processing guidance surrounds them.

Why This Topic Matters

Accurate outpatient modifier reporting affects claim processing, compliance, and how hospital services are represented to Medicare and other payers. The article helps readers understand the policy context, associated outpatient billing concepts, and the documentation emphasis surrounding these modifiers.

Article Sections

  1. Modifier -27

    Overview of hospital outpatient guidance associated with this modifier, including CMS recognition context, outpatient claim reporting, and related claim-processing concepts.

  2. Modifier -25

    Overview of hospital outpatient guidance associated with this modifier, including CMS clarification, outpatient reporting context, and related claim-processing concepts.

What You Will Learn

  • The CMS and OPPS context discussed for hospital outpatient modifier reporting
  • The general outpatient claim concepts associated with two E/M-related modifiers
  • The role of documentation in supporting outpatient modifier use
  • How the article frames related claim-processing and reimbursement concepts

Who Should Read This

  • Hospital coders
  • Outpatient billing staff
  • Revenue cycle professionals
  • Compliance auditors
  • Physician practice coders working with hospital outpatient claims

Codes Discussed

Code Ranges Discussed

Modifiers Discussed


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