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Official Description

Genome (eg, unexplained constitutional or heritable disorder or syndrome); re-evaluation of previously obtained genome sequence (eg, updated knowledge or unrelated condition/syndrome)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 81427 pertains to the re-evaluation of previously obtained genome sequences, specifically in the context of unexplained constitutional or heritable disorders or syndromes. This procedure is essential for patients who may have undergone initial genome sequencing but require further analysis due to advancements in genetic knowledge or the emergence of unrelated conditions or syndromes. Molecular genetic testing, as described, involves a comprehensive examination of both coding and non-coding DNA sequences, which are crucial for understanding genetic variations that may contribute to various health conditions. Whole genome sequencing (WGS) serves as a powerful tool in identifying rare genetic disorders, particularly in patients exhibiting atypical symptoms or characteristics. Additionally, it can be utilized by healthy individuals to determine carrier status for familial diseases or to assess predispositions to adult-onset medical conditions. The process begins with the collection of a blood sample through a separately reportable venipuncture, followed by DNA analysis using next-generation sequencing techniques. This code is particularly relevant when there is a need to revisit and interpret previously gathered genomic data in light of new scientific insights or when a patient presents with a different, unrelated genetic condition.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The indications for utilizing CPT® Code 81427 include the following:

  • Unexplained Constitutional Disorder The procedure is indicated for patients who have previously undergone genome sequencing but still present with unexplained constitutional disorders that require further genetic analysis.
  • Heritable Disorder or Syndrome It is applicable for individuals with heritable disorders or syndromes where updated genetic information may provide new insights into their condition.
  • Updated Knowledge The re-evaluation is warranted when there is new scientific knowledge that could affect the interpretation of previously obtained genome sequences.
  • Unrelated Condition/Syndrome This code is also indicated for patients who may develop or present with an unrelated genetic condition or syndrome that necessitates a review of their existing genomic data.

2. Procedure

The procedure associated with CPT® Code 81427 involves several key steps that ensure a thorough re-evaluation of the previously obtained genome sequence:

  • Step 1: Sample Collection A blood sample is collected from the patient through a separately reportable venipuncture. This step is crucial as it provides the biological material needed for DNA extraction and subsequent analysis.
  • Step 2: DNA Extraction The collected blood sample undergoes a process of DNA extraction, where the genetic material is isolated from the blood cells. This step is essential for preparing the DNA for sequencing.
  • Step 3: Next-Generation Sequencing The extracted DNA is then subjected to next-generation sequencing (NGS). This advanced technology allows for a comprehensive analysis of both coding and non-coding regions of the genome, enabling the identification of genetic variations that may be relevant to the patient's condition.
  • Step 4: Data Analysis Following sequencing, the resulting genomic data is analyzed in the context of updated genetic knowledge or the presence of unrelated conditions. This analysis may involve comparing the new data against existing databases and literature to identify any significant findings.
  • Step 5: Reporting Results Finally, the findings from the re-evaluation are compiled into a report that details any new insights or relevant genetic information that may impact the patient's diagnosis or management.

3. Post-Procedure

After the re-evaluation procedure associated with CPT® Code 81427, patients may receive a report detailing the findings from the genomic analysis. It is important for healthcare providers to discuss these results with the patient, as they may have implications for diagnosis, treatment options, or family planning. Additionally, follow-up consultations may be necessary to address any new information that arises from the re-evaluation, particularly if it relates to the management of a heritable disorder or syndrome. Patients should also be informed about the potential for further testing or referrals to genetic counseling services if new genetic risks are identified.

Short Descr GENOME RE-EVALUATION
Medium Descr GENOME RE-EVALUATION OF PREC OBTAINED GENOME SEQ
Long Descr Genome (eg, unexplained constitutional or heritable disorder or syndrome); re-evaluation of previously obtained genome sequence (eg, updated knowledge or unrelated condition/syndrome)
Status Code Statutory Exclusion (from MPFS, may be paid under other methodologies)
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 9 - Not Applicable
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 9 - Concept does not apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
CLIA Waived (QW) No
APC Status Indicator Service Paid under Fee Schedule or Payment System other than OPPS
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) T1H - Lab tests - other (non-Medicare fee schedule)
MUE 1
Date
Action
Notes
2022-01-01 Note Guidelines changed.
2015-01-01 Added Added
Code
Description
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