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Official Description

Bronchospasm provocation evaluation, multiple spirometric determinations as in 94010, with administered agents (eg, antigen[s], cold air, methacholine)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A bronchospasm provocation evaluation, identified by CPT® Code 94070, is a specialized diagnostic procedure designed to assess the reactivity of the airways in response to various stimuli. This evaluation employs multiple spirometric determinations, which are critical in measuring lung function and identifying potential bronchospasm. The procedure begins with the patient breathing normally, allowing for baseline spirometric measurements to be taken. Following this, the patient is instructed to perform forced inhalation and exhalation maneuvers, which provide additional data on lung capacity and airflow. To provoke bronchospasm, the evaluation incorporates the administration of specific agents, such as antigens, cold air, or methacholine. These agents are introduced to simulate conditions that may trigger bronchospasm in susceptible individuals, such as those with asthma or other reactive airway diseases. The spirometry device utilized in this evaluation consists of a mouthpiece connected to a machine that accurately records and displays the results of the test. During the procedure, the patient inhales deeply and exhales forcefully through the mouthpiece, allowing the spirometer to capture vital metrics, including the volume of air inhaled and exhaled, as well as the duration of each breath. The test is repeated after the administration of the provocative agents, enabling the physician to observe any changes in lung function that may indicate bronchospasm. The results of the evaluation are typically presented in a graphical format, which the physician reviews and interprets to provide a comprehensive report on the patient's pulmonary status and potential airway reactivity.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The bronchospasm provocation evaluation is indicated for patients who exhibit symptoms suggestive of airway hyperreactivity or bronchospasm. This includes individuals with conditions such as:

  • Asthma - A chronic condition characterized by inflammation and narrowing of the airways, leading to difficulty in breathing.
  • Chronic Obstructive Pulmonary Disease (COPD) - A progressive lung disease that obstructs airflow and makes breathing difficult.
  • Chronic Bronchitis - A form of COPD that involves long-term inflammation of the airways, resulting in cough and mucus production.
  • Emphysema - A condition that causes damage to the air sacs in the lungs, leading to reduced airflow and difficulty in breathing.
  • Pulmonary Fibrosis - A lung disease that occurs when lung tissue becomes damaged and scarred, affecting the ability to breathe.
  • Shortness of Breath - A symptom that may indicate underlying pulmonary issues requiring further evaluation.

2. Procedure

The bronchospasm provocation evaluation involves several key procedural steps to ensure accurate assessment of airway reactivity:

  • Step 1: Baseline Spirometry - The procedure begins with baseline spirometric measurements taken while the patient breathes normally. This establishes a reference point for lung function before any provocative agents are administered.
  • Step 2: Forced Breathing Maneuvers - Following the baseline measurements, the patient is instructed to perform rapid and forceful inhalation and exhalation. This step is crucial for assessing the maximum airflow and lung capacity under stress.
  • Step 3: Administration of Provocative Agents - After the initial spirometry tests, one or more agents, such as antigens, cold air, or methacholine, are administered to provoke bronchospasm. The choice of agent depends on the clinical scenario and the physician's discretion.
  • Step 4: Repeat Spirometry - The spirometry tests are repeated after the administration of the provocative agents. This allows for the evaluation of any changes in lung function that may indicate bronchospasm.
  • Step 5: Data Interpretation - The results from the spirometry tests are displayed graphically, and the physician reviews these results to interpret the patient's airway reactivity and overall pulmonary function.

3. Post-Procedure

After the bronchospasm provocation evaluation, patients may be monitored for any immediate reactions to the administered agents. It is essential to observe for signs of bronchospasm or adverse effects, particularly if methacholine or other provocative agents were used. Patients may be advised to avoid strenuous activities for a short period following the test, and they should be informed about potential symptoms to watch for, such as increased shortness of breath or wheezing. The physician will provide a detailed report based on the evaluation results, which may guide further management or treatment options for the patient's respiratory condition.

Short Descr EVALUATION OF WHEEZING
Medium Descr BRNCSPSM PROVOCATION EVAL MLT SPMTRY W/ADMN AGT
Long Descr Bronchospasm provocation evaluation, multiple spirometric determinations as in 94010, with administered agents (eg, antigen[s], cold air, methacholine)
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Not Discounted when Multiple
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) T2D - Other tests - other
MUE 1
CCS Clinical Classification 38 - Other diagnostic procedures on lung and bronchus

This is a primary code that can be used with these additional add-on codes.

94729 Addon Code MPFS Status: Active Code APC N Diffusing capacity (eg, carbon monoxide, membrane) (List separately in addition to code for primary procedure)
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
GC This service has been performed in part by a resident under the direction of a teaching physician
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
99 Multiple modifiers: under certain circumstances 2 or more modifiers may be necessary to completely delineate a service. in such situations modifier 99 should be added to the basic procedure, and other applicable modifiers may be listed as part of the description of the service.
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2008-01-01 Changed Code description changed.
2005-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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