FY 2019 IPPS proposed rule: Tackling proposed changes to MDCs

July 24th, 2018

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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 summarizes selected proposed changes in the FY 2019 Inpatient Prospective Payment System (IPPS) proposed rule, organized by Major Diagnostic Category (MDC). It is aimed at coding, CDI, and reimbursement professionals who need a high-level view of how the rule may affect ICD-10-CM, ICD-10-PCS, MS-DRGs, and related grouping logic across multiple clinical areas.

Why This Topic Matters

The proposed rule can change how diagnoses and procedures are grouped and paid for inpatient claims. This overview helps readers quickly identify which sections of the rule may affect hospital coding workflows, DRG assignment, and preparation for the final rule.

Article Sections

  1. Pre-MDC

    Discussion of proposed pre-MDC grouping and related MS-DRG updates affecting selected inpatient procedures and therapy-related cases.

  2. MDC 1, Diseases and Disorders of the Nervous System

    Proposed changes affecting neurologic diagnoses and their relationship to an MS-DRG grouping issue.

  3. MDC 4, Diseases and Disorders of the Respiratory System

    Proposed procedure-code additions related to respiratory system cases and their effect on DRG assignment logic.

  4. MDC 5, Diseases and Disorders of the Circulatory System

    Proposed grouping updates involving cardiovascular procedures and pacemaker-related code classification.

  5. MDC 6, Diseases and Disorders of the Digestive System

    Proposed reclassification of selected bowel-related procedures between major and minor procedure DRGs.

  6. MDC 8, Diseases and Disorders of the Musculoskeletal System and Connective Tissue

    A brief discussion of spinal fusion-related issues and why no modification was proposed in this rulemaking cycle.

  7. MDC 11, Diseases and Disorders of the Kidney and Urinary Tract

    Proposed reassignment of selected diagnosis codes and a change related to renal dialysis DRG structure.

  8. MDC 14, Pregnancy, Childbirth, and the Puerperium

    Proposed updates to grouping logic and DRG structure for obstetric cases, including procedure-code reassignment considerations.

  9. MDC 18, Infectious and Parasitic Diseases, Systemic or Unspecified Sites

    Proposed movement of selected systemic inflammatory response diagnosis codes and a revised DRG title.

  10. Summary

    A closing recap of the article’s scope and a reminder that additional changes are expected in the final rule.

What You Will Learn

  • Which broad MDC areas are addressed in the FY 2019 IPPS proposed rule
  • How the proposed rule may affect ICD-10-CM and ICD-10-PCS grouping
  • Which MS-DRG categories are highlighted for proposed revisions
  • How CMS proposed changes relate to inpatient payment and DRG logic
  • What general types of coding updates were discussed across different clinical specialties

Who Should Read This

  • Inpatient coders
  • Coding compliance staff
  • Clinical documentation improvement professionals
  • Hospital reimbursement analysts
  • Revenue cycle leaders

Codes Discussed

  • ICD-10-PCS: XW033C3
  • ICD-10-PCS: XW043C3
  • ICD-10-CM: G40.109
  • ICD-10-CM: G40.111
  • ICD-10-CM: D17.71
  • ICD-10-CM: D17.72
  • ICD-10-CM: R65.10
  • ICD-10-CM: R65.11
  • ICD-10-CM: Z49.01
  • ICD-10-CM: Z49.02
  • ICD-10-CM: Z49.31
  • ICD-10-CM: Z49.32

Code Ranges Discussed

  • MS-DRG: DRG 981–983

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