6A6 Phototherapy - Physiological Systems ICD-10-PCS
The 6A6 code range contains 5 ICD-10-PCS codes for Phototherapy procedures on the physiological systems. 4 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Phototherapy: Extracorporeal treatment by light rays.
Codes in the 6A6 Range 5 codes · 4 billable
About the 6A6 Code Range
The ICD-10-PCS root operation Phototherapy (6A6) involves applying light treatment to physiological systems. This procedure is part of the Extracorporeal or Systemic Therapies section and targets specific body parts to provide therapeutic benefits through light exposure.
Phototherapy is commonly used to treat conditions affecting the skin and the circulatory system. The provided codes differentiate treatments by the targeted system and whether a single or multiple areas are treated. For example, 6A600ZZ indicates phototherapy applied to a single portion of the skin, while 6A601ZZ represents treatment of multiple skin areas. Similarly, 6A650ZZ and 6A651ZZ specify phototherapy for single or multiple sites within the circulatory system. These distinctions help accurately document the scope and focus of phototherapeutic procedures within ICD-10-PCS.
Questions About This Page
How many billable codes are in the 6A6 range?
Of the 5 codes in this range, 4 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the 6A6 range classify?
The range classifies Phototherapy procedures, extracorporeal treatment by light rays, performed on the physiological systems. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
