Follow the steps to determine the MS-DRG

Why This Topic Matters

Understanding the MS-DRG workflow helps coding and CDI teams validate encoder output, recognize when additional review is needed, and better support accurate inpatient case grouping. It also helps readers understand where diagnosis severity, procedure significance, and MDC alignment fit into the overall process.

Article Sections

1. Overview

   Introduces the topic of manual MS-DRG determination and why coders and CDI specialists may need to understand the process beyond encoder reliance.

2. Basic steps for assigning an MS-DRG

   Summarizes the general sequence used to review diagnoses, procedures, and DRG Expert references when establishing a working MS-DRG.

3. UHDDS definitions and reportable procedures

   Discusses the UHDDS framework for reportable diagnoses and procedures and the broader concept of procedure significance in inpatient grouping.

4. Non-reimbursable procedures

   Explains how procedures that do not affect grouping are handled and how secondary diagnoses may still influence the final result.

5. Unrelated principal procedures

   Covers the general situation where a principal procedure does not align with the principal diagnosis body system and requires additional DRG Expert review.

6. Editor’s note

   Provides article attribution and author background information.