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Official Description

Urography, retrograde, with or without KUB

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 74420 refers to retrograde urography, a diagnostic imaging technique used to visualize the kidneys and ureters. In this procedure, a contrast dye, often referred to as a special dye, is introduced directly into the renal pelvis and ureters. This is done against the natural flow of urine, allowing for enhanced visibility of these structures during imaging. The primary goal of retrograde urography is to obtain detailed X-ray images that can help identify abnormalities or blockages within the urinary tract. The procedure may also include a general X-ray of the abdomen to provide additional context and information about the surrounding anatomical structures. This imaging technique is particularly useful in assessing conditions such as kidney stones, tumors, or other obstructions that may affect urinary function.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Retrograde urography, as indicated by CPT® Code 74420, is performed for several specific clinical reasons. The following conditions or symptoms may warrant this procedure:

  • Evaluation of Urinary Obstruction This procedure is often indicated when there is a suspicion of obstruction in the urinary tract, which may be caused by stones, tumors, or strictures.
  • Investigation of Hematuria The presence of blood in the urine (hematuria) may necessitate retrograde urography to identify potential sources of bleeding within the kidneys or ureters.
  • Assessment of Renal Anatomy This procedure can be indicated for detailed evaluation of the renal anatomy, particularly in cases where congenital anomalies or anatomical variations are suspected.
  • Follow-up of Previous Urological Procedures Retrograde urography may be indicated to assess the results of prior surgical interventions or treatments involving the urinary tract.

2. Procedure

The retrograde urography procedure involves several key steps that ensure accurate imaging of the kidneys and ureters. The following outlines the procedural steps involved:

  • Step 1: Patient Preparation Prior to the procedure, the patient is prepared by ensuring they are adequately hydrated and have followed any pre-procedure instructions, such as fasting or avoiding certain medications. The healthcare provider will explain the procedure and obtain informed consent.
  • Step 2: Administration of Contrast Dye The physician introduces a catheter into the urethra, which is then advanced into the bladder. From the bladder, the catheter is further advanced into the ureters to reach the renal pelvis. A special contrast dye is injected through the catheter, allowing it to flow retrograde into the kidneys and ureters.
  • Step 3: Imaging Acquisition Once the contrast dye is administered, the physician takes X-ray images of the kidneys and ureters. These images capture the anatomy and any potential abnormalities as the dye outlines the structures. A general X-ray of the abdomen may also be performed to provide additional context.
  • Step 4: Post-Procedure Monitoring After the imaging is completed, the patient is monitored for any immediate adverse reactions to the contrast dye. The healthcare team will ensure the patient is stable before allowing them to recover and resume normal activities.

3. Post-Procedure

Following the retrograde urography procedure, patients may experience some mild discomfort or transient symptoms, such as a burning sensation during urination or a feeling of fullness in the bladder. It is important for patients to stay hydrated to help flush the contrast dye from their system. Healthcare providers will typically provide instructions regarding any necessary follow-up appointments to discuss the results of the imaging and any further diagnostic or therapeutic steps that may be required based on the findings. Patients should be advised to report any unusual symptoms, such as severe pain, persistent hematuria, or signs of an allergic reaction to the contrast dye.

Short Descr UROGRAPHY RTRGR +-KUB
Medium Descr UROGRAPHY RETROGRADE WITH/WO KUB
Long Descr Urography, retrograde, with or without KUB
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
ASC Payment Indicator Radiology service paid separately when provided integral to a surgical procedure on ASC list; payment based on OPPS relative payment weight.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I1F - Standard imaging - other
MUE 2
CCS Clinical Classification 226 - Other diagnostic radiology and related techniques
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.
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
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
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.
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
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).
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
FX X-ray taken using film
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.
CR Catastrophe/disaster related
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
GW Service not related to the hospice patient's terminal condition
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
FY X-ray taken using computed radiography technology/cassette-based imaging
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
27 Multiple outpatient hospital e/m encounters on the same date: for hospital outpatient reporting purposes, utilization of hospital resources related to separate and distinct e/m encounters performed in multiple outpatient hospital settings on the same date may be reported by adding modifier 27 to each appropriate level outpatient and/or emergency department e/m code(s). this modifier provides a means of reporting circumstances involving evaluation and management services provided by physician(s) in more than one (multiple) outpatient hospital setting(s) (eg, hospital emergency department, clinic). note: this modifier is not to be used for physician reporting of multiple e/m services performed by the same physician on the same date. for physician reporting of all outpatient evaluation and management services provided by the same physician on the same date and performed in multiple outpatient setting(s) (eg, hospital emergency department, clinic), see evaluation and management, emergency department, or preventive medicine services codes.
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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.)
CG Policy criteria applied
GJ "opt out" physician or practitioner emergency or urgent service
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GZ Item or service expected to be denied as not reasonable and necessary
HO Masters degree level
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
QJ Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b)
SG Ambulatory surgical center (asc) facility service
UB Medicaid level of care 11, as defined by each state
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
Date
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Notes
2021-01-01 Changed Short and medium descriptions changed.
2011-01-01 Changed Medium description changed. Short description changed.
Pre-1990 Added Code added.
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