94760

Noninvasive ear or pulse oximetry for oxygen saturation; single determination

CPT code 94760 describes a noninvasive procedure used to measure the oxygen saturation level (SpO2) of a patient's arterial blood using a pulse oximeter. This specific code is designated for a 'single determination,' meaning a one-time 'spot check' of the patient's oxygen levels rather than continuous or multiple measurements. The technology relies on spectrophotometry, utilizing light-emitting diodes (LEDs) that transmit two specific wavelengths of light—red (660 nm) and infrared (940 nm)—through a translucent part of the patient's body, typically a fingertip, earlobe, or a toe. Oxygenated hemoglobin absorbs more infrared light, while deoxygenated hemoglobin absorbs more red light. A photodetector on the opposite side of the tissue captures the light that passes through. The device then calculates the ratio of the absorption of these two wavelengths during the pulsatile phase of arterial blood flow to estimate the percentage of hemoglobin saturated with oxygen. This procedure is a vital diagnostic tool in clinical medicine, providing immediate feedback on a patient's respiratory and cardiovascular status without the need for an invasive arterial blood gas (ABG) draw. It is commonly performed during initial assessments in emergency departments, primary care offices, and during physical therapy evaluations to screen for hypoxemia, monitor the severity of respiratory conditions, or determine the need for supplemental oxygen therapy. Because this code represents a single point-in-time measurement, it is often considered an integral part of a more comprehensive evaluation and management service.

Clinical Indications

  • Acute respiratory distress or shortness of breath
  • Monitoring patients with chronic obstructive pulmonary disease (COPD)
  • Assessment of asthma exacerbation severity
  • Screening for hypoxemia in patients with pneumonia or bronchitis
  • Evaluation of patients with suspected heart failure or pulmonary edema
  • Initial assessment of patients presenting with chest pain
  • Pre-operative and post-operative oxygenation screening
  • Monitoring patients receiving conscious sedation or opioid analgesics
  • Assessment of neonates for congenital heart disease or respiratory distress
  • Screening for sleep apnea or other sleep-disordered breathing

Procedure Steps

  1. Verify the patient's identity and explain the noninvasive nature of the test.
  2. Select an appropriate sensor site such as a fingertip, earlobe, or toe that is well-perfused.
  3. Ensure the site is clean and remove any barriers to light transmission, such as dark nail polish or artificial nails.
  4. Attach the pulse oximeter probe securely to the selected site, ensuring the light source and detector are properly aligned.
  5. Turn on the pulse oximeter device and wait for it to establish a stable pulse signal.
  6. Observe the plethysmographic waveform or signal strength indicator to ensure accurate reading acquisition.
  7. Note the oxygen saturation percentage (SpO2) and the simultaneous pulse rate once the readings stabilize.
  8. Remove the probe and document the findings, including the use of any supplemental oxygen at the time of the measurement.

Coding Guidelines

  • CPT 94760 is used for a single determination. If multiple readings are taken during a single encounter, see code 94761.
  • Most payers, including Medicare, consider pulse oximetry (94760) to be a 'Status T' or bundled service, meaning it is not separately reimbursed when performed on the same day as an Evaluation and Management (E/M) service.
  • For Medicare, this service is usually only separately payable when it is the only service provided or in very specific clinical scenarios governed by Local Coverage Determinations (LCDs).
  • Do not report 94760 in conjunction with continuous monitoring (94762).
  • The use of the code requires a medical necessity for the measurement; routine 'vital sign' pulse oximetry without a respiratory-related diagnosis is often non-reimbursable.
  • If performed in a facility setting (hospital outpatient), the professional component is typically bundled into the facility fee.

Associated ICD-10 Codes