Determine MS-DRG shifts in ICD-10

October 21st, 2015

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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 examines how ICD-10 implementation may change MS-DRG assignment compared with ICD-9-CM, with attention to reimbursement effects, diagnosis coding specificity, and documentation review. It is intended for HIM professionals, coders, CDI staff, and financial stakeholders who need to understand which cases are most likely to shift and why broad payment redistribution may occur.

Why This Topic Matters

MS-DRG shifts can affect payment distribution, budgeting, and case-mix analysis even when the overall percentage of changes appears small. The article helps readers recognize where ICD-10-related differences may have the greatest operational and financial impact.

Article Sections

  1. MS-DRG shift

    Introduces the concept of MS-DRG shifts under ICD-10 and summarizes why facilities should review high-volume diagnoses and surgical groups. Also discusses general factors that influence reimbursement impact and the need to monitor changes across payer environments.

  2. Anemia and malignancy

    Reviews how changes in diagnosis coding and documentation can affect grouping for anemia cases associated with malignancy or treatment-related conditions. Focuses on how these cases may be evaluated for MS-DRG movement under the newer code set.

  3. Decreased specificity

    Discusses examples where ICD-10-CM structure and specificity differ from ICD-9-CM and how those differences can alter grouping outcomes. Covers selected condition categories that illustrate broader impacts on case classification.

  4. Hypertension

    Explores how hypertension-related coding changes can influence CC/MCC capture and MS-DRG shifts. Also notes the importance of reviewing records for additional clinical conditions that may affect grouping.

What You Will Learn

  • How ICD-10 implementation may change MS-DRG assignment patterns
  • Why some diagnosis groups are more likely to shift than others
  • How documentation and coding specificity can influence grouping outcomes
  • What broad factors affect reimbursement analysis for ICD-10-related shifts
  • How coding review workflows can be targeted around high-volume cases

Who Should Read This

  • HIM managers
  • medical coders
  • CDI specialists
  • coding educators
  • revenue integrity staff
  • CFOs and comptrollers

Codes Discussed

  • ICD-9-CM: 285.22
  • ICD-9-CM: 200.20
  • ICD-10-CM: D63.0
  • ICD-10-CM: C83.70
  • ICD-9-CM: 530.82
  • ICD-9-CM: 530.89
  • ICD-10-CM: K22.8
  • ICD-9-CM: 807.03
  • ICD-10-CM: I10
  • ICD-9-CM: 401.0
  • ICD-9-CM: 402.00
  • ICD-10-CM: N17.9

Code Ranges Discussed

  • ICD-9-CM: 807.0x
  • ICD-9-CM: 807.1x
  • ICD-10-CM: S22.3-
  • ICD-10-CM: S22.4-

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