6A3 Hyperthermia - Physiological Systems ICD-10-PCS
The 6A3 code range contains 3 ICD-10-PCS codes for Hyperthermia procedures on the physiological systems. 2 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Hyperthermia: Extracorporeal raising of body temperature.
Codes in the 6A3 Range 3 codes · 2 billable
About the 6A3 Code Range
The ICD-10-PCS root operation Hyperthermia (code starting with 6A3) refers to a therapeutic procedure where body temperature is artificially raised to treat medical conditions. It belongs to the Extracorporeal or Systemic Therapies section and targets whole physiological systems rather than localized organs.
This systemic therapy involves controlled elevation of core body temperature to enhance treatment efficacy, often used in cancer or infection management. The coding distinctions include Hyperthermia, Single (6A3Z0ZZ), indicating one session or target area, and Hyperthermia, Multiple (6A3Z1ZZ), for repeated or multi-site treatments. These ICD-10-PCS codes aid in documenting the delivery of hyperthermic therapy and capturing its systemic nature accurately within patient records and billing processes.
Questions About This Page
How many billable codes are in the 6A3 range?
Of the 3 codes in this range, 2 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 6A3 range classify?
The range classifies Hyperthermia procedures, extracorporeal raising of body temperature, 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.
