Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Rectal sensation, tone, and compliance test (ie, response to graded balloon distention)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 91120 refers to a specialized diagnostic procedure known as the rectal sensation, tone, and compliance test. This test is designed to evaluate the compliance and sensory characteristics of the rectal wall, particularly in patients experiencing conditions such as constipation or fecal incontinence. The procedure involves the insertion of a probe equipped with a balloon into the rectum, which is then secured in place using tape to ensure stability during the test. The balloon is connected to a computerized device that allows for controlled distension of the rectum. Over a period of 30 minutes, the balloon is inflated in a stepwise manner, enabling the assessment of intra-operating pressure (IOP) and rectal tone. During the test, intermittent balloon distensions are conducted until the patient reports sensations such as the desire to defecate and urgency. This process helps to determine the maximum tolerable volume of distension for the patient. After the initial assessments, the patient is instructed to expel the balloon. Following a brief rest period of 15 minutes, the balloon is reinserted and inflated to the previously established IOP. To further evaluate rectal function, the patient is then provided with a 1,000-calorie meal, and any changes in rectal tone and sensory responses are meticulously recorded over the next 60 minutes. Finally, the balloon is deflated and removed along with the probe, concluding the test. This comprehensive assessment provides valuable insights into rectal function and assists healthcare providers in diagnosing and managing conditions related to bowel control and sensation.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The rectal sensation, tone, and compliance test (CPT® Code 91120) is indicated for patients who present with specific gastrointestinal symptoms or conditions. These include:

  • Constipation This condition is characterized by infrequent bowel movements or difficulty in passing stools, which may necessitate an evaluation of rectal function.
  • Fecal Incontinence This condition involves the involuntary loss of stool, prompting the need to assess rectal compliance and sensory response to better understand the underlying issues.

2. Procedure

The procedure for the rectal sensation, tone, and compliance test involves several detailed steps to ensure accurate assessment of rectal function.

  • Step 1: Preparation The patient is positioned comfortably, and a probe with an attached balloon is carefully inserted into the rectum. The probe is secured in place using tape to prevent movement during the test.
  • Step 2: Initial Distension The balloon is connected to a computerized distending device, which allows for controlled inflation. Over a 30-minute period, the balloon is distended in a stepwise manner, enabling the measurement of intra-operating pressure (IOP) and assessment of rectal tone.
  • Step 3: Sensory Assessment Intermittent balloon distensions are performed, during which the patient is asked to report sensations such as the desire to defecate and urgency. This step is crucial for determining the maximum tolerable volume of balloon distension.
  • Step 4: Balloon Expulsion After the sensory assessment, the patient is instructed to expel the balloon, allowing for a brief evaluation of rectal function without the balloon in place.
  • Step 5: Rest Period Following the expulsion, the patient is given a 15-minute rest period to allow for recovery before the next phase of the test.
  • Step 6: Re-insertion and Meal Administration The balloon is reinserted and inflated to the previously determined IOP. The patient is then fed a 1,000-calorie meal to stimulate rectal function, and any changes in rectal tone and sensory responses are recorded over the next 60 minutes.
  • Step 7: Conclusion of the Test After the 60-minute observation period, the balloon is deflated and removed along with the probe, completing the test.

3. Post-Procedure

After the completion of the rectal sensation, tone, and compliance test, patients may be monitored for any immediate discomfort or complications. It is important to provide instructions regarding any potential post-procedure symptoms, such as mild rectal discomfort or transient changes in bowel habits. Patients should be advised to resume normal activities as tolerated and to report any unusual symptoms to their healthcare provider. Follow-up appointments may be scheduled to discuss the results of the test and any necessary further evaluations or treatments based on the findings.

Short Descr RECTAL SENSATION TEST
Medium Descr RECTAL SESATION TONE & COMPLIANCE TEST
Long Descr Rectal sensation, tone, and compliance test (ie, response to graded balloon distention)
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) 1 - Medical Care
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE 1
CCS Clinical Classification 97 - Other gastrointestinal diagnostic procedures
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.
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
GC This service has been performed in part by a resident under the direction of a teaching physician
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
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.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GP Services delivered under an outpatient physical therapy plan of care
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
PA Surgical or other invasive procedure on wrong body part
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
2005-01-01 Added First appearance in code book in 2005.
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"