Deletion of modifier

The use of Modifier CP, Adjunctive service related to a procedure assigned to a comprehensive ambulatory payment classification (C-APC) procedure, but reported on a different claim, was previously required for calendar years (CYs) 2016 through 2017. This modifier was utilized to identify adjunctive services on a claim related to a procedure assigned to a Comprehensive Ambulatory Payment Classification (C-APC) procedure. As of December 31, 2017, the requirement for modifier CP ended and therefore, was deleted and no longer applicable for use in CY 2018. ...

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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 a Medicare outpatient payment policy change affecting an APC-related modifier and its use over a specific historical period. It is relevant to hospital outpatient coders, billing staff, and reimbursement professionals who track OPPS and APC policy updates, especially those affecting claim reporting requirements across calendar years.

Why This Topic Matters

Understanding when a modifier requirement ended is important for accurate historical claim review, policy research, and avoiding outdated billing practices. The article helps readers recognize that guidance tied to earlier calendar years may no longer apply in later reporting periods.

What You Will Learn

  • The historical timeframe associated with a modifier requirement
  • How a payment classification policy change can affect claim reporting
  • Why end-dates for coding-related requirements matter for billing compliance
  • Which general type of outpatient payment guidance the article addresses

Who Should Read This

  • Hospital outpatient coders
  • Billing and reimbursement staff
  • Revenue cycle professionals
  • Compliance staff
  • Coding auditors

Modifiers Discussed

  • HCPCS Level II: CP

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