Summary & Overview
CPT 88362: Nerve Biopsy Nerve-Teasing Preparation
CPT code 88362 identifies a specialized pathology service in which a nerve biopsy specimen is processed and examined using nerve teasing preparations. This technique is used to assess peripheral nerve structure at a microscopic level and contributes to diagnosing neuropathies, inflammatory neuropathies, and certain metabolic or hereditary nerve disorders. The code matters nationally because nerve biopsy analysis is a critical, low-volume diagnostic service that supports complex clinical decision-making and can impact downstream care pathways.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of typical clinical indications and settings for this service, benchmarking context where available, and operational considerations relevant to pathology and laboratory services. The publication outlines how 88362 fits within pathology service lines, common sites of service, and the clinical value of nerve teasing preparations. Data not available in the input is clearly noted where applicable. The content is intended for billing managers, pathology directors, and policy analysts seeking national-level clarity on coding and clinical context for CPT code 88362.
Billing Code Overview
CPT code 88362 describes a pathology procedure in which an analyst examines a nerve biopsy specimen using nerve teasing preparations, a histological technique that isolates and spreads nerve fibers for detailed microscopic evaluation. This procedure supports the diagnosis of peripheral neuropathies and other nerve disorders by enabling visualization of axonal and myelin changes.
-
Service type: Histopathology / Diagnostic nerve biopsy analysis
-
Typical site of service: Hospital pathology laboratory or independent diagnostic laboratory with microscopic pathology capabilities
Clinical & Coding Specifications
Clinical Context
A 54-year-old patient presents with progressive distal symmetric sensory loss, paresthesia, and reduced deep tendon reflexes over several months. Neurology obtains a sural nerve biopsy to evaluate for suspected peripheral neuropathy of unclear etiology (e.g., vasculitic neuropathy, chronic inflammatory demyelinating polyneuropathy, or amyloidosis). The surgical team performs a small open sural nerve excision under local or monitored anesthesia care and forwards the fresh specimen to the pathology laboratory. In the histology suite, a neurodiagnostic laboratory technologist or pathologist’s assistant prepares nerve teasing preparations: the specimen is teased into individual fascicular fibers, mounted, stained as indicated, and examined microscopically. The analyst documents findings such as axonal degeneration, demyelination, inflammatory infiltrates, or amyloid deposition and issues a diagnostic report to the ordering neurologist. Typical site of service: hospital outpatient pathology lab or independent diagnostic laboratory tied to an ambulatory surgery or inpatient procedure. Service type: diagnostic histopathology / specialized neuromuscular pathology technique.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Undefined/placeholder (not commonly used clinically) | Rarely used; retained in systems but not applied for clinical reporting |