More on New Category III Codes for 2025 (0901T, 0946T)

July 2025 page 11 More on New Category III Codes for 2025 (0901T, 0946T) Nearly one-third of all newly established codes in the CPT 2025 code set were added to the Category III section. These codes represent emerging technologies and medical trends that are tracked for utilization and efficacy. This article focuses on two new Category III codes: code 0901T, which describes the placement of a port used for bone marrow sampling, including imaging guidance, and code 0946T, which describes computed tomography (CT)-guided orthopedic implant analysis. Before 2025, there were no specific codes available to report these services. The...

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

Article Overview

This article is aimed at coders, billers, and clinical documentation staff who need to understand a small set of new CPT Category III codes introduced for 2025. It covers the purpose of the new codes, the broad services they relate to, the reporting context for related imaging or ancillary services, and typical clinical scenarios and procedural descriptions that illustrate the services at a high level.

Why This Topic Matters

New Category III codes often fill prior reporting gaps for emerging technologies and procedures. Understanding the scope of these changes helps coding teams recognize when documentation may align with newly established reporting options and avoid confusion with nearby or related services.

Article Sections

  1. Category III Codes

    Introduces the new 2025 Category III code additions discussed in the article and frames them as part of broader CPT updates for emerging services.

  2. 0901T

    Covers the first new code’s general service area, associated reporting context, and related procedural considerations.

  3. 0946T

    Covers the second new code’s general service area, associated reporting context, and related procedural considerations.

  4. Clinical Example (0901T)

    Presents a sample clinical scenario illustrating the type of encounter associated with the first new code.

  5. Description of Procedure (0901T)

    Summarizes the general procedural steps described for the first new code without reproducing detailed instructions.

  6. Clinical Example (0946T)

    Presents a sample clinical scenario illustrating the type of encounter associated with the second new code.

  7. Description of Procedure (0946T)

    Summarizes the general procedural steps described for the second new code without reproducing detailed instructions.

What You Will Learn

  • The role of newly established CPT Category III codes in tracking emerging procedures
  • The general service areas addressed by the 2025 code additions discussed in the article
  • How the article frames related imaging and ancillary reporting context
  • The kinds of clinical scenarios used to illustrate these new codes

Who Should Read This

  • Medical coders
  • Coding auditors
  • Revenue cycle staff
  • Clinical documentation specialists
  • Physician practices and hospital coding teams

Codes Discussed

Code Ranges Discussed

Modifiers Discussed


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