6A4T00A
Hypothermia Urinary System to Intraoperative with Donor Organ Protective Thermal Insulation, Single Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 6 Extracorporeal or Systemic Therapies |
| Body System | A Physiological Systems |
| Operation | 4 Hypothermia |
| Body Part | T Urinary System |
| Approach | 0 Single |
| Device | 0 Donor Organ Protective Thermal Insulation |
| Qualifier | A Intraoperative |
Operation Definition
Extracorporeal lowering of body temperature
Procedure Overview
Therapeutic hypothermia deliberately lowers a patient's core body temperature using cooling blankets, cooling catheters, or circulating water systems. It is used most often after cardiac arrest and in newborns who experienced oxygen deprivation around birth, since slowing the body's metabolism reduces the brain's oxygen demand and can limit further injury during the critical hours after the event.
The process is carefully staged: cooling to a target temperature, maintaining it for a set period, then rewarming slowly, all while vital signs and neurological status are tracked. It is a protocol-driven intervention performed in intensive care settings rather than a routine comfort measure.
Anatomy & Axis Detail
Urinary System
Hypothermia directed at the urinary system involves cooling the kidneys or urinary tract locally, most often to protect renal tissue from ischemic injury during procedures that interrupt or reduce blood flow, such as complex renal surgery. The kidney's sensitivity to warm ischemia time makes localized cooling clinically important, and techniques may include iced saline slush packed around the organ or cold perfusate delivered directly to the renal parenchyma. Coders should look for documentation specifying that cooling was applied to the urinary structure itself rather than the patient as a whole, since systemic cooling would instead fall under the body part value of None; the procedure note should also identify the cooling method and duration to support accurate code selection.
Duration: Single
In Extracorporeal or Systemic Therapies, this value in the duration position indicates the treatment was administered as one isolated session rather than a planned series. It matters for coding accuracy because payers and registries track whether a therapy like phototherapy or hyperthermia was a one-time intervention. It is distinguished from Multiple, which captures repeated or ongoing courses of the same therapy.
Qualifier: Donor Organ Protective Thermal Insulation
Donor Organ Protective Thermal Insulation is a qualifier indicating that a systemic hypothermia or thermal therapy procedure was performed specifically to protect a donor organ during preservation or transplantation processes. It differs from the No Qualifier value by specifying this distinct protective purpose rather than a general therapeutic application of temperature management.
Qualifier: Intraoperative
Intraoperative specifies that the extracorporeal or systemic therapy, such as therapeutic hyperthermia or hypothermia, was administered during the course of a surgical operation rather than as a separate, standalone treatment. It distinguishes the timing of the therapy from procedures performed before or after surgery, which would not carry this qualifier.
Coding & Documentation
Documentation supporting this code should describe the cooling device or method used, the target temperature achieved, the duration the patient was kept cooled, and the clinical indication, typically post-arrest neuroprotection or neonatal encephalopathy. A common mistake is coding this root operation for a patient who arrived hypothermic by accident and was simply rewarmed to normal; that scenario is the opposite direction and does not belong here. Another frequent error is coding temperature monitoring alone, without an active cooling intervention, as therapeutic hypothermia.
Commonly Confused With
The most common point of confusion is with Hyperthermia, since both belong to the same family of systemic temperature-control procedures but act in opposite directions. It can also be confused with passive temperature management, such as removing blankets or adjusting room temperature, which is not device-based and is not coded as a procedure. Coders should also distinguish it from rewarming techniques used to treat accidental or environmental hypothermia, which involves raising temperature rather than lowering it.