CPT 96933 Reflectance Confocal Microscopy Reimbursement

CPT code 96933 covers the interpretation and reporting of reflectance confocal microscopy for a single skin lesion or localized area of damaged or diseased tissue. Reflectance confocal microscopy is a noninvasive dermatologic imaging technique that uses near–infrared light to produce high-resolution images of skin architecture and cellular detail. As a targeted diagnostic interpretation code, 96933 matters nationally because it documents specialized image interpretation that can influence clinical decisions about biopsy, treatment planning, and surveillance of suspicious lesions.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context and appropriate use, payer coverage patterns and benchmarks, and coding considerations relevant to outpatient dermatology and ambulatory imaging settings. The publication also summarizes common modifiers and administrative details where available and highlights how 96933 fits within broader dermatologic imaging services.

This summary is intended to provide clinicians, billing professionals, and policy analysts a concise reference to the clinical role of CPT code 96933, expected sites of service, and the types of information payers typically review when adjudicating claims for reflectance confocal microscopy interpretation.

Billing Code Overview

CPT code 96933 describes reflectance confocal microscopy interpretation and reporting for a single skin lesion or area of damaged or diseased tissue. The service involves focusing near–infrared light on the skin to detect abnormal lesions or scar formation; the light source is connected to a computer that displays real‑time images of the tissue under examination. Use of this code applies when the provider interprets the confocal images and documents the findings for a single lesion or localized area.

Service type: Diagnostic imaging interpretation and report focused on dermatologic lesions

Typical site of service: Outpatient dermatology clinic or ambulatory surgical center where skin imaging is performed, and other outpatient settings in which a provider performs and interprets reflectance confocal microscopy.

Clinical Context

A 54-year-old patient presents to a dermatology clinic with a solitary, irregular pigmented lesion on the forearm that has changed in size and color over several months. The dermatologist performs a focused skin examination and uses reflectance confocal microscopy to noninvasively evaluate the lesion at near–cellular resolution. The device directs near–infrared light to the lesion and the image is displayed on a connected computer. The provider acquires images of the single lesion, interprets the findings, documents the confocal images and impression in the medical record, and communicates results to the patient. If findings are suspicious for malignancy, the workflow proceeds to targeted biopsy or excision; if benign features are confirmed, continued surveillance is documented. Typical site of service is an outpatient dermatology clinic or ambulatory surgery center when performed as a diagnostic imaging assessment for a single skin lesion.

Coding Specifications

Modifier	Description	When to Use
`11`	Primary service	When this reflectance confocal microscopy interpretation is the primary service provided on the encounter.
`22`	Increased procedural services	When documentation supports significantly greater work than typical for interpretation and reporting.

Taxonomy Code	Specialty	Notes
207N00000X	Dermatology	Dermatologists commonly perform and interpret reflectance confocal microscopy for skin lesion evaluation.
207NP0200X	Dermatopathology	Dermatopathologists may review confocal images in multidisciplinary evaluation; often interpret histopathology if biopsy performed.
362M00000X	Radiology (Diagnostic)	Diagnostic radiologists may be involved in imaging interpretation workflows in some centers; less common for skin-confocal imaging.
208000000X	General Practice	Primary care clinicians may use or refer for confocal imaging during evaluation of suspicious skin lesions.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`L82.0`	Solar lentigo	Benign pigmented lesion often evaluated to distinguish from malignant lesions with confocal imaging.
`L57.0`	Actinic keratosis	Precancerous lesion of sun-damaged skin that may be assessed with confocal microscopy when clinical uncertainty exists.
`D22.9`	Melanocytic nevus, unspecified	Common benign mole that may be imaged to evaluate atypical features.
`C43.9`	Malignant melanoma of skin, unspecified	Confocal microscopy can help identify features suspicious for melanoma prompting biopsy.
`C44.9`	Squamous cell carcinoma of skin, unspecified	Nonmelanoma skin cancer that may be evaluated when lesion morphology is unclear.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`11102`	Tangential biopsy of skin (e.g., shave, scoop), single lesion	Performed when confocal microscopy suggests a lesion requires histologic diagnosis; often follows interpretation.
`11100`	Biopsy of skin, single lesion, by punch	Alternative biopsy technique used after suspicious confocal findings to obtain tissue for pathology.
`88305`	Level IV surgical pathology, gross and microscopic examination	Pathology code commonly reported for histologic evaluation of skin biopsy specimens obtained after confocal assessment.
`99213`	Established patient office or other outpatient visit, typically 15 minutes	Typical evaluation and management visit associated with performing and documenting the confocal examination in clinic.
`96933`	Reflectance confocal microscopy for single lesion — Interpretive reporting	The diagnostic code describing acquisition and interpretation of near–infrared reflectance confocal images for a single skin lesion.

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Summary & Overview

CPT 96933: Reflectance Confocal Microscopy Interpretation for Single Skin Lesion