CPT 81221 Targeted CFTR Testing Reimbursement | OpenPayer

Summary & Overview

CPT 81221: Targeted Familial CFTR Mutation Analysis

CPT code 81221 represents a targeted laboratory test to detect known familial mutations in the CFTR gene, the gene associated with cystic fibrosis. This focused genetic assay is used when specific CFTR variants have been identified in a patient’s relatives and a directed test is needed to confirm carrier status or diagnosis. Nationally, targeted familial testing supports cascade testing, reproductive counseling, and diagnostic clarification, and it helps laboratories and payers align coverage for clinically indicated hereditary testing.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for targeted CFTR testing, the typical laboratory and site-of-service setting, and which payers commonly cover such testing. The publication summarizes benchmark considerations for utilization and payment policy, highlights common modifier usage, and outlines where clinical documentation is typically required for medical necessity determinations.

This resource is intended for billing professionals, laboratory directors, and policy analysts seeking a concise national summary of CPT code 81221, its clinical application, and the payment landscape for targeted familial CFTR mutation analysis.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare81221CPTgenetic-testingCFTRcystic-fibrosisfamilial-mutation-analysisclinical-laboratorymolecular-diagnostics

Billing Code Overview

CPT code 81221 describes a targeted genetic test for the cystic fibrosis transmembrane conductance regulator (CFTR) gene, performed to detect the presence of specific mutations known to occur in a patient’s family members. The procedure involves laboratory analysis of a patient sample to identify familial CFTR sequence variants.

Service type: Genetic testing — targeted familial CFTR mutation analysis

Typical site of service: Clinical laboratory or reference genetic testing laboratory

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A patient with a known family history of cystic fibrosis (CF) is referred for targeted genetic testing to determine whether they carry the same CFTR mutation(s) identified in affected relatives. Typical patients include asymptomatic adults contemplating parenthood, partners of known carriers, or children of individuals with CF. The clinical workflow begins with genetic counseling to obtain informed consent and a focused family mutation list. A specimen (blood or buccal) is collected and sent to a molecular diagnostics laboratory. The laboratory performs targeted mutation analysis for the specific CFTR variant(s) reported in the family. Results are interpreted by a clinical molecular geneticist and reported to the ordering clinician, who reviews implications for carrier status, reproductive planning, or cascade testing of relatives. Turnaround time varies by laboratory but commonly ranges from several days to a few weeks depending on method and confirmation testing.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier - standard reporting	Used when no special circumstances apply and full global service is billed.
`26`	Professional component

CPT 81306: NUDT15 Variant Detection, Targeted Genotyping

CPT-81245-FLT3-ITD-MOLECULAR-TEST

CPT 81245: FLT3 Internal Tandem Duplication (ITD) Molecular Test

CPT-81277-GENOMIC-CNV-LOH-ANALYSIS-FOR-CANCER

CPT 81277: Genomic CNV and LOH Analysis for Cancer

CPT-81217-BRCA2-FAMILIAL-VARIANT-TESTING

CPT 81217: Targeted BRCA2 Familial Variant Testing

CPT-81319-PMS2-LARGE-DELETION-DUPLICATION-ANALYSIS

CPT 81319: PMS2 Large Deletion/Duplication Analysis

CPT-81276-KRAS-ADDITIONAL-VARIANT-DETECTION-NON-EXON-2

CPT 81276: KRAS Non-Exon 2 Variant Detection

CPT-81296-MSH2-FAMILIAL-MUTATION-TARGETED-TESTING

CPT 81296: Targeted Familial MSH2 Mutation Testing

CPT-81338-MPL-GENE-VARIANT-ANALYSIS-MPN

CPT 81338: MPL Gene Variant Analysis for Myeloproliferative Neoplasms

CPT-81326-PMP22-FAMILIAL-MUTATION-TESTING

CPT 81326: Targeted Familial Mutation Analysis, PMP22

CPT-81235-EGFR-GENE-MUTATION-TESTING

CPT 81235: EGFR Gene Mutation Detection, Laboratory Analysis

Showing 1–10 of 199

Taxonomy Code	Specialty	Notes
2084P0800X	Clinical Molecular Genetics	Laboratory directors and molecular geneticists who perform and interpret CFTR testing.
208D00000X	Clinical Pathology	Pathologists involved in laboratory oversight and result sign-out.
363L00000X	Clinical Laboratory	Diagnostic laboratory organizations performing the technical component.
207Q00000X	Medical Genetics	Medical geneticists who provide pre- and post-test counseling and interpret clinical implications.
208000000X	Pediatrics	Pediatricians who order testing for children with family history or newborn follow-up.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z14.8`	Genetic carrier status for other specified conditions	Used when documenting carrier testing for CFTR family mutations in asymptomatic individuals.
`Z31.42`	Encounter for genetic counseling for carrier status	Indicates pre-test genetic counseling related to carrier testing for CFTR mutations.
`Z36.0`	Antenatal screening for chromosomal anomalies (maternal)	Applied when carrier testing occurs as part of prenatal planning or screening.
`E84.0`	Cystic fibrosis with pulmonary manifestations	Relevant when testing is performed in relatives or to confirm a familial mutation in symptomatic patients.
`Z13.79`	Encounter for screening for other genetic and chromosomal disorders	Used for population or targeted genetic screening, including familial CFTR mutation testing.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`81221`	CFTR gene analysis; targeted mutation analysis for mutations present in family members (the billed code)	Identifies whether the patient carries the specific CFTR variant(s) known in the family; used when testing is limited to familial mutations.
`81220`	CFTR gene analysis; common variants analysis, panel testing	Performed when broader panel testing for common CFTR mutations is needed rather than a single-family variant.
`81223`	CFTR gene analysis; full gene sequence analysis	Used when comprehensive sequencing of the CFTR gene is required because targeted/familial testing is negative or the clinical picture warrants full gene analysis.
`81479`	Unlisted molecular pathology procedure	Used for novel or nonstandard CFTR testing methods not otherwise described by specific CPT codes.
`84152`	Sweat chloride test	Performed clinically to evaluate for cystic fibrosis when genetic testing results are uncertain or for diagnostic confirmation in symptomatic patients.

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