Summary & Overview

CPT 20206: Percutaneous Needle Muscle Biopsy

CPT code 20206 denotes a percutaneous needle muscle biopsy, a minimally invasive surgical diagnostic procedure used to obtain muscle tissue for evaluation of neuromuscular disease, infection, inflammatory conditions, or metabolic disorders. This code is relevant nationally for both clinical diagnosis and procedural billing, affecting reimbursement workflows across major public and private payers.

Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise national overview of the code’s clinical context, typical sites of service, and the common billing modifiers associated with this procedure. The publication outlines benchmarks relevant to utilization and reimbursement, highlights policy or coding updates that affect claim adjudication, and summarizes documentation elements that support medical necessity.

Intended for coding professionals, billing managers, and clinical leaders, the summary provides actionable clarity on where CPT code 20206 fits in procedural coding hierarchies, common billing practices, and areas where payer policies commonly vary. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 20206muscle biopsysurgical diagnosticoutpatient procedureprocedure codingneedle biopsymedical billingclinical documentation

Billing Code Overview

CPT code 20206 describes a percutaneous needle muscle biopsy, a surgical procedure in which a needle is used to obtain a sample of muscle tissue for diagnostic analysis of suspected neuromuscular disease, inflammatory conditions, infection, or metabolic disorders. The procedure is categorized as a surgical diagnostic service.

Service type: Percutaneous needle muscle biopsy (surgical diagnostic procedure)
Typical site of service: Ambulatory surgical center or hospital outpatient department; may also be performed in an office or clinic setting when appropriate and equipped for minor surgical procedures.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 56-year-old patient presents with progressive, asymmetric proximal muscle weakness and myalgias over several months. Neurologic exam shows decreased strength in the deltoid and quadriceps muscles with preserved reflexes. Laboratory testing demonstrates an elevated creatine kinase level and serologic tests are inconclusive. After neurology evaluation and imaging to exclude focal lesions, a decision is made to obtain a tissue diagnosis with a percutaneous needle muscle biopsy to evaluate for inflammatory myopathy, muscular dystrophy, or infectious myositis. The procedure is performed in an outpatient ambulatory surgery center or hospital procedure room under local anesthesia with or without conscious sedation. A targeted muscle (commonly quadriceps or deltoid) is sampled percutaneously using a biopsy needle; specimens are sent for histopathology, immunohistochemistry, and microbiology as indicated. Post-procedure monitoring includes observation for bleeding, neurovascular status, and pain control before discharge with wound care instructions.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional Component	Use when reporting only the physician’s professional interpretation or service separate from the technical component.
`50`

Taxonomy Code	Specialty	Notes
`2080P0106X`	Physical Medicine & Rehabilitation	Physiatrists perform diagnostic muscle biopsies when evaluating neuromuscular disorders.
`207RH0000X`	Neurological Surgery	Neurologists often coordinate and perform or supervise muscle biopsies for diagnostic evaluation.
`207L00000X`	Pathology	Pathologists interpret biopsy specimens; some pathology practices perform needle procurement in specialized settings.
`208100000X`	Family Medicine	Family physicians in certain settings may perform percutaneous biopsies when procedural scope includes minor surgical procedures.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M33.2`	Polymyositis	Inflammatory myopathy commonly diagnosed with muscle biopsy to confirm inflammatory infiltrates.
`M33.90`	Dermatopolymyositis, unspecified, without organ involvement	Muscle biopsy aids in distinguishing dermatomyositis/polymyositis subtypes.
`G72.0`	Drug-induced myopathy	Biopsy can identify characteristic histologic changes and exclude other causes.
`M62.81`	Muscle weakness (generalized)	Biopsy used when structural muscle disease is suspected as a cause of weakness.
`M60.9`	Myositis, unspecified	Biopsy clarifies etiology (infectious vs inflammatory vs metabolic).
`A49.9`	Bacterial infection, unspecified	When infectious myositis is suspected, biopsy with microbiology is diagnostic.
`G71.0`	Muscular dystrophy	Biopsy contributes to diagnosis and subtype classification when genetic testing is inconclusive.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`20206`	Percutaneous needle muscle biopsy	Primary procedure to obtain muscle tissue for histologic and microbiologic analysis.
`20200`	Excisional or open incisional muscle biopsy, superficial	Alternative open approach when a larger specimen or full-thickness sample is required.
`20610`	Arthrocentesis, aspiration and/or injection; major joint or bursa (e.g., shoulder, hip)	May be performed in the same encounter if joint aspiration is clinically indicated for differential diagnosis of joint vs muscle pathology.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common E/M code for pre-procedure evaluation when a significant E/M is performed the same day.
`76942`	Ultrasonic guidance for needle placement (e.g., biopsy, aspiration, injection), imaging supervision and interpretation	Used when ultrasound guidance is employed to localize the target muscle and guide needle biopsy for accuracy and safety.
`36415`	Collection of venous blood by venipuncture	Performed in the same visit for laboratory tests such as creatine kinase and serologies as part of the diagnostic workup.