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    v1.0.30
    OpenPayerBilling CodesDiagnostic Radiology (Diagnostic Imaging) Procedures of the Urinary TractCPT cpt-74420-retrograde-urography-retrograde-pyelography
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    CPT 74420: Retrograde Urography (Retrograde Pyelography)

    Medicare pays $56 on average nationally for this procedure.

    CPT code 74420 describes a retrograde urography (retrograde pyelography) procedure in which the provider instills radiopaque contrast through a catheter against normal urine flow to image the upper urinary tract; service type: diagnostic contrast imaging of the urinary tract, typical site of service: radiology suite or operating room/fluoroscopy-equipped procedure room.

    For related coverage guidance, see recent payer policy updates: Vafseo (vadadustat) for anemia in CKD on dialysis, Metabolic Disorders - Cysteamine (Oral) Products for Individual and Family Plans, Kerendia (finerenone) — Coverage Criteria.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 58-year-old male presents with flank pain, microscopic hematuria, and suspected upper urinary tract obstruction after prior imaging (renal ultrasound and CT) suggested hydronephrosis of the left kidney. The urology team schedules an operative diagnostic procedure in the fluoroscopy suite or hybrid operating room where the patient is positioned for cystoscopy. Under sterile conditions, the urologist performs cystoscopy and places a ureteral catheter retrograde into the affected ureter. Radiopaque contrast is injected against the normal flow to opacify the ureter and renal collecting system while fluoroscopic images are obtained to define the level and cause of obstruction (stone, stricture, mass) and to guide potential therapeutic maneuvers such as stent placement or stone removal. Typical site of service is an ambulatory surgical center or hospital-based operating/procedure room with fluoroscopy capability. The clinical workflow includes pre-procedure consent and antibiotic prophylaxis as indicated, cystoscopic ureteral catheterization, contrast injection with fluoroscopic imaging (retrograde pyelography), interpretation of images by the provider, and documentation of findings and any immediate interventions (e.g., retrograde stent placement). Post-procedure recovery includes monitoring for hematuria, infection, and contrast-related reactions before discharge or inpatient admission based on clinical status.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    52000Cystourethroscopy, with or without collection of specimen(s) by brushing or washing when performed (separate procedure)Cystoscopy is typically performed immediately before retrograde urography to access the ureteral orifice and place the ureteral catheter.
    52005Cystourethroscopy, with insertion of indwelling ureteral stent (eg, Gibbons or double-J type)Ureteral stent placement may follow retrograde urography when obstruction is identified and requires decompression.
    50590Lithotripsy, shock wave (extracorporeal)If retrograde pyelography identifies ureteral or renal calculi, subsequent stone management such as ESWL may be scheduled.
    52332Cystourethroscopy, with ureteroscopy and/or pyeloscopy; diagnostic, with or without collection of specimen(s)Diagnostic ureteroscopy may be performed following retrograde imaging to directly visualize ureteral or renal pelvic pathology.
    74450Voiding cystourethrography, radiological, with image documentationOther fluoroscopic urinary tract studies that may be performed in conjunction depending on clinical indication.

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    208U00000X
    208800000X
    207T00000X
    363L00000X
    208VP0000X
    335V00000X
    246ZX2200X
    372600000X

    Related ICD-10-CM Codes

    28 rows

    ICD-10-CM CodeDescription
    I12.9Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
    N11.0Nonobstructive reflux-associated chronic pyelonephritis
    N11.1Chronic obstructive pyelonephritis
    N11.8Other chronic tubulo-interstitial nephritis
    N13.2Hydronephrosis with renal and ureteral calculous obstruction
    N13.6Pyonephrosis
    N13.8Other obstructive and reflux uropathy
    N20.0Calculus of kidney
    N20.1Calculus of ureter
    N20.2Calculus of kidney with calculus of ureter

    Showing 1–10 of 28

    Related Payer Policy Updates

    Specialty: Nephrology1 / 3

    10 rows

    PolicyPayerEffective Date
    Vafseo (vadadustat) for anemia in CKD on dialysisCigna2026-08-15
    Metabolic Disorders - Cysteamine (Oral) Products for Individual and Family PlansCigna2026-08-15
    Kerendia (finerenone) — Coverage CriteriaBlue Cross Blue Shield - Iowa2026-08-05
    Voyxact (sibeprenlimab-szsl) — Prior authorization / medical necessity for primary IgA nephropathyColorado Rocky Mountain Health Plans2026-08-01
    Oxlumo (lumasiran) and Rivfloza (nedosiran) — Coverage Criteria (Ohio)Colorado Rocky Mountain Health Plans2026-08-01
    Korsuva (difelikefalin) — Medical Benefit Drug Coverage Criteria (Ohio)Colorado Rocky Mountain Health Plans2026-08-01
    Complement Inhibitors - EmpaveliCigna2026-08-01
    Tolvaptan (Jynarque)Cigna2026-08-01
    Nephrology - Filspari (sparsentan) coverageCigna2026-08-01
    Rivfloza (nedosiran) prior authorization for PH1UnitedHealthcare2026-08-01

    Related Codes

    CPT-74400-INTRAVENOUS-UROGRAPHY-KUB-PYELOGRAPHY

    CPT 74400: Intravenous Urography/Pyelography, Kidneys-Ureters-Bladder

    CPT-74410-IVP-CONTRAST-KIDNEYS-URETERS-BLADDER

    CPT 74410: Intravenous Urography (KUB) with Contrast

    CPT-74415-IV-PYELOGRAPHY-NEPHROTOMOGRAPHY-URINARY-TRACT-XRAY

    CPT 74415: Intravenous Pyelogram with Nephrotomography

    CPT-74425-ANTEGRADE-UROGRAPHY-IMAGING-INTERPRETATION

    CPT 74425: Antegrade Urography with Contrast Radiographs

    CPT-74430-URINARY-BLADDER-RADIOGRAPHIC-IMAGING-THREE-VIEWS

    CPT 74430: Radiographic Imaging of Urinary Bladder, ≥3 Views

    CPT-74440-VAS-DEFERENS-SEMINAL-VESICLE-EPIDIDYMIS-IMAGING

    CPT 74440: Imaging of Vas Deferens, Seminal Vesicles, or Epididymis

    CPT-74445-CORPORA-CAVERNOSA-IMAGING-SUPERVISION-INTERPRETATION

    CPT 74445: Corpora Cavernosa Imaging Supervision and Interpretation

    CPT-74450-RETROGRADE-URETHROCYSTOGRAPHY-IMAGING-SUPERVISION-INTERPRETATION

    CPT 74450: Urethrocystography, Retrograde Imaging Supervision and Interpretation

    CPT-74455-VOIDING-URETHROCYSTOGRAPHY-IMAGING-INTERPRETATION

    CPT 74455: Voiding Urethrocystography, Imaging Supervision and Interpretation

    CPT-74470-CONTRAST-IMAGING-FOR-RENAL-CYST-LOCALIZATION

    CPT 74470: Imaging Supervision and Interpretation for Renal Cyst Localization

    Showing 1–10 of 11

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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