AMA CPT® Assistant - 1999 Issue 10 (October)
Cytogenetic Studies (October 1999)
October 1999 pages 1-3 Cytogenetic Studies CPT codes for cytogenetic tests have been used for many years to describe the components of these highly complex laboratory services. CPT 1999 contains several significant changes within the 88230 - 88299 series of codes for reporting cytogenetic studies. The major changes include the addition of new codes to describe fluorescence in situ hybridization (FISH) tests; cancer cytogenetic analysis; the freezing and storage, and subsequent thawing and expansion, of established cell lines for subsequent reference laboratory testing; and for reporting the interpretation and report of cytogenetic or molecular cytogenetic tests. In this article...
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Article Overview
This article explains October 1999 CPT updates for cytogenetic studies and how the revised code family is organized around laboratory workflow, specimen handling, specialized testing methods, and interpretation/reporting. It is intended for coders, laboratory staff, and others who need to understand the scope of the CPT changes, the affected code ranges, and the broad categories of testing discussed in the article.
Why This Topic Matters
Cytogenetic testing often requires multiple CPT codes for a single study, so understanding the 1999 updates helps support accurate reporting and alignment with evolving laboratory methods.
Article Sections
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October 1999 pages 1-3
Introduces the scope of the October 1999 update and summarizes the main CPT changes affecting cytogenetic services.
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Cell Culture
Covers the revised CPT coding framework for cell culture services used in cytogenetic testing, including how the code family is organized by intended use and tissue type.
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Freezing and Storage - Thawing and Expansion
Describes the addition of codes for preserving cells and later restoring established cell lines for further laboratory testing.
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Breakage Syndromes
Reviews changes to coding for chromosome breakage analysis and related stress testing methodologies.
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Cancer Cytogenetics
Summarizes the code change addressing cytogenetic analysis in cancer-related testing and evolving standards for cell evaluation.
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Molecular Cytogenetics
Covers the added CPT codes associated with fluorescence in situ hybridization and related molecular cytogenetic methods.
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Interpretation and Report
Explains the separate reporting concept for interpretation and reporting of cytogenetic and molecular cytogenetic testing.
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Summary
Provides a high-level recap of how cytogenetic studies are coded as combinations of services across the testing workflow.
What You Will Learn
- How the CPT code family for cytogenetic studies was updated in October 1999
- The major subject areas affected by the revision of cytogenetic laboratory coding
- How the article organizes cytogenetic testing into workflow-based coding categories
- Which broad testing methods and laboratory services are discussed in the update
- Why interpretation and reporting are treated as a separate coding component
Who Should Read This
- Medical coders
- Laboratory billing staff
- Cytogenetics laboratory personnel
- Pathology and genetics practices
- Compliance and reimbursement teams
Codes Discussed
Code Ranges Discussed
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