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Official Description

Spectroscopy, expired gas analysis (eg, nitric oxide/carbon dioxide test)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 0064T refers to a procedure known as spectroscopy, specifically focusing on expired gas analysis. This technique involves measuring the amount of light absorbed by specific gases, which allows for the analysis of their content in the patient's exhaled breath. One common application of this procedure is to detect the concentration of carbon dioxide (CO2) being exhaled during a breath test. By analyzing the light absorption characteristics of the gases present, healthcare professionals can gain valuable insights into respiratory function and metabolic processes. This non-invasive method is particularly useful in assessing conditions related to respiratory health and can aid in the diagnosis and management of various pulmonary disorders.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 0064T is indicated for various clinical scenarios where analysis of expired gases is necessary. The following conditions may warrant the use of this spectroscopy technique:

  • Respiratory Assessment This procedure is utilized to evaluate respiratory function by measuring the levels of gases such as carbon dioxide in the exhaled breath.
  • Metabolic Monitoring It can be employed to monitor metabolic processes, particularly in patients with conditions that affect gas exchange and metabolism.
  • Diagnosis of Pulmonary Disorders The test may assist in diagnosing specific pulmonary disorders by providing insights into the gas exchange efficiency of the lungs.

2. Procedure

The procedure for CPT® Code 0064T involves several key steps to ensure accurate measurement and analysis of expired gases. Each step is critical for obtaining reliable results:

  • Preparation of the Patient The patient is typically instructed to breathe normally and may be asked to refrain from certain activities or substances that could affect the results prior to the test. This preparation is essential to ensure that the measurements reflect the patient's baseline respiratory function.
  • Collection of Expired Gas Samples The patient exhales into a specialized device designed to capture the expired gases. This device is equipped with sensors that measure the light absorption characteristics of the gases present in the exhaled breath.
  • Analysis of Gas Composition The collected gas samples are analyzed using spectroscopy techniques. The device measures the amount of light absorbed by the gases, allowing for the quantification of specific components, such as carbon dioxide and nitric oxide.
  • Interpretation of Results After the analysis, the results are interpreted by a qualified healthcare professional. The findings can provide valuable information regarding the patient's respiratory function and metabolic status, aiding in clinical decision-making.

3. Post-Procedure

Post-procedure care for patients undergoing the spectroscopy for expired gas analysis is generally minimal, as the procedure is non-invasive and does not typically require recovery time. Patients may resume normal activities immediately following the test. However, healthcare providers may offer guidance on interpreting the results and any necessary follow-up actions based on the findings. It is important for patients to discuss any concerns or symptoms with their healthcare provider after the procedure to ensure comprehensive care and management of their respiratory health.

Short Descr SPECTROSCOP EVAL EXPIRED GAS
Medium Descr SPECTROSCOP EVAL EXPIRED GAS
Long Descr SPECTROSCOPY EXP GAS ALYS
APC Status Indicator Ancillary Services
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
CCS Clinical Classification 40 - Other diagnostic procedures of respiratory tract and mediastinum
Date
Action
Notes
2010-01-01 Deleted -
2005-01-01 Added Code added.
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