ICD-10-CM update: Final 2018 diagnosis codes contain dozens of new, deleted codes in addition to proposed set

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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 reviews the final 2018 ICD-10-CM update and compares it with the earlier proposed set. It is aimed at coders, billing staff, and compliance professionals who need to track annual diagnosis code changes, revised terminology, and newly added reporting options across several clinical areas. The discussion covers major groups of updates, including fracture terminology corrections, substance use remission coding, myocardial infarction, heart failure, antenatal screening, and selected deletions.

Why This Topic Matters

Annual ICD-10-CM updates affect diagnosis reporting, claim accuracy, and code set maintenance. Understanding which areas changed helps coding teams prepare for implementation dates and update reference tools and workflows.

Article Sections

  1. Overview of the final 2018 ICD-10-CM update

    Introduces the scope of the final diagnosis code update and notes how it differs from the proposed set. Summarizes the overall volume of additions, deletions, and revisions.

  2. Fracture terminology corrections

    Describes updates affecting finger and toe fracture terminology within related ICD-10-CM category groupings. Explains that the changes apply across multiple codes in the affected chapters and categories.

  3. Other new changes in the final ICD-10-CM update

    Reviews several newly added or expanded diagnosis reporting areas, including substance remission, myocardial infarction, heart failure, antenatal screening, and other diagnoses mentioned as part of the final update.

  4. Deletion highlights

    Summarizes selected code deletions that were not included in the final set after appearing in the proposed version. Covers the broad types of deleted items noted by the article.

  5. Implementation and related resources

    Notes planned timing for updated mapping files and points readers to supporting reference materials. Provides the closing resource context for the update.

What You Will Learn

  • How the final 2018 ICD-10-CM update differs from the proposed diagnosis code set.
  • Which broad diagnosis categories received revisions, expansions, or deletions.
  • How annual ICD-10-CM changes are organized and communicated for implementation.
  • What general types of code updates affect common reporting areas such as fractures, substance use, cardiac conditions, and screening.

Who Should Read This

  • Medical coders
  • Coding managers
  • Billing and reimbursement staff
  • Compliance professionals
  • Physician practice administrators

Codes Discussed

Code Ranges Discussed

  • ICD-10-CM: I21.0-I21.4
  • ICD-10-CM: L97
  • ICD-10-CM: I27
  • ICD-10-CM: K56.6, K91
  • ICD-10-CM: S62
  • ICD-10-CM: S92

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