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December 11, 2025

Coding for Prolonged Services | Webinar

Recorded April 17, 2025
1 CEU expires 4/30/26

Coding for prolonged services requires practitioner education, careful documentation and coder oversight. These codes are the opposite of “set and forget.” CPT and CMS use different codes and have different time thresholds. For some services, CMS allows time spent on services done on a different date!

Coding Guide – Prolonged Services

Prolonged services codes function as add-on codes to the highest-level Evaluation and Management (E/M) services in certain categories. To use prolonged care, providers must select the primary code based on time, which is explicitly stated in both the CPT® and HCPCS definitions of prolonged services. For billing purposes, the full 15 minutes of prolonged services […]

Coding for Prolonged Services: CPT® and HCPCS Codes

Common rules: Prolonged services codes are add-on codes to the highest level E/M services in certain categories. In order to use prolonged care, the primary code must be selected based on time. This is in the CPT® and HCPCS definition of prolonged services. Prolonged services codes may only be added to the highest-level code in […]

Non Face-to-Face Prolonged Service – 99358

This article covers: CPT® Rules for Prolonged Care Non Face to Face Using 99358 for phone calls Are Start and Stop Times Required for Non Face-to-Face Prolonged Care Services? There are two time-based CPT codes for non-face-to-face prolonged care services. These codes may not be used on the day of an Evaluation and Management (E/M) […]

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Our mission is to provide up-to-date, simplified, citation driven resources that empower our members to gain confidence and authority in their coding role.

In 1988, CodingIntel.com founder Betsy Nicoletti started a Medical Services Organization for a rural hospital, supporting physician practice. She has been a self-employed consultant since 1998. She estimates that in the last 20 years her audience members number over 28,400 at in person events and webinars. She has had 2,500 meetings with clinical providers and reviewed over 43,000 medical notes. She knows what questions need answers and developed this resource to answer those questions.

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