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Official Description

Computerized dynamic posturography sensory organization test (CDP-SOT), 6 conditions (ie, eyes open, eyes closed, visual sway, platform sway, eyes closed platform sway, platform and visual sway), including interpretation and report;

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

A computerized dynamic posturography sensory organization test (CDP-SOT) is a specialized assessment designed to evaluate balance impairments in patients. This test is crucial for differentiating between various underlying causes of balance issues, which may include sensory, motor, and central adaptive factors. During the procedure, the patient stands on a moveable support surface that is housed within a dynamic enclosure. The use of a computer allows for precise manipulation of both the support surface and the surrounding enclosure, creating a controlled environment for testing. The CDP-SOT is conducted under six specific conditions: eyes open, eyes closed, visual sway, platform sway, eyes closed platform sway, and platform and visual sway. Each condition is designed to challenge the patient's vestibular balance control and assess how the central nervous system adapts to perceived changes in the support surface, both with and without visual input. By systematically altering sensory information, the test creates scenarios that simulate real-world balance challenges. This comprehensive evaluation not only helps in identifying the nature of balance impairments but also aids in developing targeted treatment strategies. The results of the test are interpreted and reported, providing valuable insights into the patient's balance capabilities and potential areas for intervention.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The computerized dynamic posturography sensory organization test (CDP-SOT) is indicated for patients experiencing balance impairments. The following conditions may warrant the performance of this test:

  • Vestibular Disorders Patients with suspected vestibular dysfunction may require this test to evaluate their balance control mechanisms.
  • Neurological Conditions Individuals with neurological disorders that affect balance, such as multiple sclerosis or Parkinson's disease, may benefit from this assessment.
  • Post-Concussion Syndrome Patients recovering from concussions may undergo this test to assess balance and stability as part of their rehabilitation.
  • Unexplained Falls Individuals who have experienced unexplained falls or instability may be evaluated using the CDP-SOT to identify underlying causes.
  • Pre-Operative Assessment Patients scheduled for surgical procedures that may impact balance may undergo this test as part of their pre-operative evaluation.

2. Procedure

The procedure for conducting the computerized dynamic posturography sensory organization test (CDP-SOT) involves several key steps to ensure accurate assessment of the patient's balance capabilities.

  • Step 1: Patient Preparation The patient is prepared for the test by explaining the procedure and ensuring they understand the importance of maintaining balance during the assessment. The patient's height and weight are measured to calibrate the equipment appropriately.
  • Step 2: Positioning The patient is positioned on a moveable support surface within a dynamic enclosure. This setup allows for the simulation of various balance challenges.
  • Step 3: Sensory Organization Testing The CDP-SOT is performed under six specific conditions: eyes open, eyes closed, visual sway, platform sway, eyes closed platform sway, and platform and visual sway. Each condition is designed to test the patient's vestibular balance control and adaptive responses to changes in sensory input.
  • Step 4: Motor Control Testing Following the sensory organization test, a motor control test (MCT) is conducted. During this phase, the support surface is moved backward and forward to assess the patient's postural responses, focusing on timing, strength, and lateral symmetry of the response.
  • Step 5: Adaptation Testing The adaptation test (ADT) is then performed, where the support surface is tilted in toes up and toes down positions. This step evaluates the patient's ability to modify posture and minimize sway in response to the tilting surface.
  • Step 6: Data Interpretation After completing the tests, the results are analyzed and displayed using standardized graphical summaries. These results are compared to age-based norms to provide a comprehensive interpretation of the patient's balance capabilities.

3. Post-Procedure

After the completion of the computerized dynamic posturography sensory organization test (CDP-SOT), the patient may receive immediate feedback regarding their performance. The results, including any identified balance impairments, will be documented in a report that can be shared with the referring physician or healthcare provider. Depending on the findings, further evaluation or intervention may be recommended. Patients are typically advised to resume normal activities unless otherwise directed, and any specific recommendations for follow-up care or rehabilitation will be provided based on the test outcomes. It is essential for healthcare providers to discuss the implications of the test results with the patient to ensure a clear understanding of the next steps in their care plan.

Short Descr CDP-SOT 6 COND W/I&R
Medium Descr CDP-SOT 6 CONDITIONS W/INTERPRETATION & REPORT
Long Descr Computerized dynamic posturography sensory organization test (CDP-SOT), 6 conditions (ie, eyes open, eyes closed, visual sway, platform sway, eyes closed platform sway, platform and visual sway), including interpretation and report;
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 STV-Packaged Codes
Type of Service (TOS) 1 - Medical Care
Berenson-Eggers TOS (BETOS) T2D - Other tests - other
MUE 1
CCS Clinical Classification 227 - Other diagnostic procedures (interview, evaluation, consultation)
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.
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.
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
X1 Continuous/broad services: for reporting services by clinicians, who provide the principal care for a patient, with no planned endpoint of the relationship; services in this category represent comprehensive care, dealing with the entire scope of patient problems, either directly or in a care coordination role; reporting clinician service examples include, but are not limited to: primary care, and clinicians providing comprehensive care to patients in addition to specialty care
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).
GW Service not related to the hospice patient's terminal condition
GA Waiver of liability statement issued as required by payer policy, individual case
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).
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
KX Requirements specified in the medical policy have been met
RT Right side (used to identify procedures performed on the right side of the body)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2020-01-01 Changed Code description changed.
2011-01-01 Changed Location in hierarchy changed.
1997-01-01 Added First appearance in code book in 1997.
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