CPT 96573 Photodynamic Therapy Reimbursement | OpenPayer

Summary & Overview

CPT 96573: Photodynamic Therapy with Topical Photosensitizer

CPT code 96573 covers photodynamic therapy in which a provider applies a photosensitizing drug to a lesion and exposes the area to a wavelength of light to destroy precancerous cells of the skin and adjacent mucosa. The code is reportable only once per day and applies to procedures performed by a physician or other qualified health care professional. As a targeted, localized therapy for superficial precancerous and early neoplastic lesions, the code has clinical relevance across dermatology and certain otolaryngology or oral mucosal practices.

Key payers in the national coverage landscape include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context and site-of-service considerations, typical billing and reporting constraints, and where to look for payer-specific coverage and reimbursement policies. The publication also summarizes common modifiers and administrative details when available and notes when input data are incomplete.

This analysis is designed for national audiences seeking a concise reference on the service definition, typical care settings, and payer scope for CPT code 96573, supporting operational, coding, and policy decision-making.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 96573photodynamic therapydermatologyoutpatient procedureprecancerous lesionsphotosensitizerlight therapyprocedure coding

Billing Code Overview

CPT code 96573 describes a physician or other qualified health care professional applying a photosensitizing drug to a lesion and exposing the treated area to a specific wavelength of light to destroy precancerous cells of skin and adjacent mucosa. The procedure is typically performed when targeted photodynamic therapy is indicated to treat superficial precancerous or early neoplastic lesions.

Service type: Photodynamic therapy (topical photosensitizer application with light activation)

Typical site of service: Outpatient dermatology clinic or ambulatory surgical center, depending on lesion location and required depth of light penetration.

Clinical & Coding Specifications

Clinical Context

A 68-year-old patient with a history of chronic sun exposure presents to a dermatology clinic with multiple actinic keratoses and a field of dysplastic, precancerous lesions on the dorsal hands and forearms. After evaluation by a board-certified dermatologist, the decision is made to perform photodynamic therapy to treat superficial precancerous lesions. On the day of service the patient is prepared in a dermatology procedure room: informed consent is confirmed, lesions are cleansed, a photosensitizing agent is applied to the target lesion(s), and the agent is allowed an incubation period. The provider then exposes the treated area to a specific wavelength light source for the prescribed time to activate the photosensitizer and induce selective cell destruction. Post-procedure wound care instructions are given and a follow-up visit is scheduled.

Coding Specifications

Modifier	Description	When to Use
`11`	Office or other outpatient E/M — typically default	Use when reporting an unrelated E/M service on the same day as the procedure when applicable and documented.
`22`	Increased procedural services	Use when the work, time, or intensity substantially exceeds the typical for photodynamic therapy and documentation supports increased reimbursement.

CPT 96567: Photodynamic Therapy for Precancerous Skin Lesions

CPT-96571-PHOTODYNAMIC-THERAPY-DURING-ENDOSCOPY-BRONCHOSCOPY

CPT 96571: Photodynamic Therapy During Endoscopy or Bronchoscopy

CPT-96574-PHOTODYNAMIC-THERAPY-FOR-PRECANCEROUS-SKIN-LESIONS

CPT 96574: Photodynamic Therapy for Precancerous Skin Lesions

CPT-96570-PHOTODYNAMIC-THERAPY-DURING-ENDOSCOPY-BRONCHOSCOPY

CPT 96570: Photodynamic Therapy During Endoscopy or Bronchoscopy

Taxonomy Code	Specialty	Notes
207P00000X	Dermatology	Dermatologists most commonly perform photodynamic therapy for cutaneous precancerous lesions.
208D00000X	General Surgery	Some general surgeons treat mucosal or cutaneous precancerous lesions in procedural settings.
207L00000X	Dermatopathology	Involved for biopsy and diagnosis of lesions before PDT when histologic confirmation is needed.
207K00000X	Mohs Micrographic Surgery (Dermatologic Surgery)	Dermatologic surgeons may perform PDT as part of multimodal treatment planning.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C44.10`	Squamous cell carcinoma of skin, unspecified site	In situations where lesions are invasive or suspicious, biopsy confirmation is required; PDT is for precancerous or superficial lesions, not invasive SCC.
`D04.9`	Carcinoma in situ of skin, unspecified	Photodynamic therapy is used for superficial noninvasive neoplastic lesions and may be considered for carcinoma in situ in some clinical contexts.
`L57.0`	Actinic keratosis	Primary indication for topical photodynamic therapy to treat multiple or field actinic damage.
`D49.2`	Neoplasm of uncertain behavior of skin	Used when the lesion’s behavior is uncertain prior to definitive histologic diagnosis; PDT may be considered for premalignant fields.
`L85.9`	Disorder of skin, unspecified	Occasionally used when specific lesion type is not otherwise classified but clinician documents precancerous field change amenable to PDT.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`11102`	Tangential biopsy of skin, single lesion	Performed prior to photodynamic therapy to obtain histologic diagnosis of suspicious lesions.
`17000`	Destruction of premalignant lesions (e.g., actinic keratoses); up to 14 lesions	An alternative or adjunct treatment; may be used when PDT is not indicated or for smaller numbers of lesions.
`97597`	Debridement (e.g., topical) — selective debridement for wounds or lesions	May be performed prior to application of photosensitizer if necrotic tissue requires removal.
`99070`	Supplies and materials (e.g., noncovered items)	Used to report additional supplies such as specialized photosensitizing agents or dressing materials when payer allows separate reporting.
`96573`	Photodynamic therapy, as described	Primary procedure code for topical photodynamic therapy to destroy precancerous skin and adjacent mucosa; reportable once per day.

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