E/M update 2023: Navigate new combo observation/inpatient codes to prepare for 2023

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

Article Overview

This article explains the 2023 transition in CPT E/M coding for hospital observation and inpatient services. It focuses on the shift to MDM- or time-based code selection, the consolidation of observation services into inpatient hospital codes, updates to MDM guidance, and the impact of same-day E/M bundling changes. It also notes where CMS proposed policy differs from AMA guidance, making the piece relevant for coders, auditors, and compliance staff working with hospital-based E/M services.

Why This Topic Matters

The update affects how hospital observation and inpatient encounters are reported and how same-day E/M services are handled across AMA and Medicare guidance. Coders and billing teams need to understand the scope of the 2023 changes to support accurate reporting and policy alignment.

Article Sections

  1. Observation and inpatient code consolidation

    Describes the overall shift in hospital E/M reporting and the consolidation of observation-related services into a streamlined hospital coding structure.

  2. Observation folds into inpatient

    Explains the relationship between observation and inpatient hospital services under the revised framework and notes related descriptor updates.

  3. MDM table takes updates

    Summarizes revisions to the medical decision-making guidelines and table as they apply to hospital-related encounters.

  4. Update unbundles same-day E/M services

    Covers the revised handling of same-day E/M services when an encounter leads to a hospital admission or observation stay, including discussion of AMA and CMS differences.

  5. Resources

    Lists reference materials and source documents cited by the article.

What You Will Learn

  • How the 2023 CPT update changes hospital observation and inpatient E/M reporting
  • Which areas of hospital E/M guidance were revised for 2023
  • How the article frames differences between AMA guidance and CMS policy
  • What categories of documentation and guideline changes are discussed for hospital-based E/M services

Who Should Read This

  • Medical coders
  • Coding auditors
  • Compliance staff
  • Hospital billing teams
  • Physician practice administrators

Codes Discussed

Code Ranges Discussed

Modifiers Discussed


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