CPT 81222 CFTR Repeat/Deletion Reimbursement

CPT code 81222 represents a targeted molecular diagnostic assay for detecting repeated or deleted nucleotide changes in the CFTR gene, which is central to diagnosing cystic fibrosis–related genetic alterations. This code is used by clinical and reference laboratories performing technical analysis of CFTR sequence variations where repeat or deletion events are evaluated. Nationally, accurate molecular characterization of CFTR variants impacts diagnostic accuracy, carrier screening, and downstream care planning for affected individuals and families.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for CFTR repeat/deletion testing, typical sites of service, and the service type. The publication outlines common billing practice considerations, lists frequently used modifiers, and identifies how payers commonly reference or cover such molecular diagnostic services. It also highlights what to expect in terms of documentation and coding alignment for laboratory technical components.

This summary provides a national perspective on clinical relevance and billing classification for CPT code 81222, helping laboratory billing specialists, molecular diagnosticians, and policy analysts understand where this code fits within genetic testing services and payer coverage landscapes. Data not available in the input is noted where applicable.

Billing Code Overview

CPT code 81222 describes a laboratory molecular test that detects specific changes involving repeated or deleted nucleotides in the cystic fibrosis transmembrane conductance regulator gene (CFTR). The procedure involves technical laboratory analysis to identify nucleotide repeat expansions or deletions within the CFTR gene sequence.

Service type: Clinical molecular diagnostic laboratory test
Typical site of service: Clinical molecular diagnostics laboratory or reference genetic testing laboratory

Clinical Context

A typical patient is an infant or adult with a personal or family history suggestive of cystic fibrosis (CF) or a positive newborn screening result for CFTR-related variants. The clinical workflow begins with a referral from a pediatrician, geneticist, pulmonologist, or reproductive specialist. A blood sample (EDTA whole blood or extracted DNA) is collected in the clinic or hospital laboratory and is sent to a molecular diagnostics laboratory. The laboratory technologist performs targeted analysis for CFTR repeat or deletion/duplication changes using appropriate molecular methods (for example, fragment analysis, PCR-based assays, or other targeted mutation testing platforms). Results are reviewed and interpreted by a laboratory director or molecular geneticist, reported to the ordering clinician, and integrated into clinical management such as confirmatory testing, genetic counseling, carrier screening for reproductive planning, or treatment decision-making for CFTR-modulator therapies.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the interpretation/reporting component by the physician or laboratory director separate from the technical testing.
`TC`	Technical component

Taxonomy Code	Specialty	Notes
207RG0100X	Clinical Geneticist	Interprets and directs genetic testing and counseling.
2080P0207X	Medical Geneticist Medical Doctor	Orders and interprets molecular diagnostics in hereditary disease.
207L00000X	Laboratory Director	Molecular pathology or clinical laboratory oversight and result sign-out.
207K00000X	Pathology	Molecular pathology interpretation and reporting.
207L00000X	Clinical Molecular Genetics Laboratory	Performing laboratory technical staff and directors.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`E84.0`	Cystic fibrosis with pulmonary manifestations	Confirms disease diagnosis prompting CFTR molecular testing for diagnosis and management.
`E84.9`	Cystic fibrosis, unspecified	Used when CF is suspected or not fully characterized but testing is indicated.
`Z13.79`	Encounter for screening for other genetic and chromosomal abnormalities	Used for asymptomatic newborn or carrier screening prompting CFTR testing.
`Z31.69`	Encounter for other genetic counseling and testing of mother	Used when carrier testing is performed during preconception or prenatal planning.
`R94.8`	Abnormal results of other specified diagnostic studies	Used when abnormal newborn screen or sweat chloride prompts molecular confirmation.
`Z34.90`	Encounter for supervision of normal pregnancy, unspecified	Used in prenatal carrier screening contexts when CFTR testing is performed as part of prenatal care.
`Z13.79`	Genetic carrier screening	Used for general population carrier screening workflows involving CFTR testing.
`R79.9`	Abnormal clinical findings of blood chemistry, unspecified	Occasionally used when biochemical screening suggests further genetic evaluation.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`81220`	CFTR (cystic fibrosis transmembrane conductance regulator) gene analysis; common variants (eg, panels for common mutations)	Often used as an initial targeted panel for common CFTR mutations prior to or instead of full variant/deletion analysis.
`81221`	CFTR gene analysis; full gene sequence analysis of coding region and splice junctions	Performed when broader sequencing is required after targeted testing or when rare/pathogenic variants are suspected.
`81223`	CFTR gene analysis; duplication/deletion variants analysis (large rearrangements)	Used when copy-number variants or large deletions/duplications are suspected or to complement `81222` for structural variant detection.
`81224`	CFTR gene analysis; common variant panel plus full gene sequence (combined approaches)	Represents combined testing strategies where both targeted and sequence analyses are performed for comprehensive evaluation.
`0000F`	Genetic counseling (example counseling code)	Genetic counseling sessions typically accompany testing for result discussion and reproductive counseling (Note: use actual counseling CPT codes relevant to billing policies).

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Summary & Overview

CPT 81222: CFTR Repeat/Deletion Molecular Analysis