52332

🔭 CPT 52332 - Cystourethroscopy with Insertion of Indwelling Ureteral Stent

Full Descriptor: Cystourethroscopy, with insertion of indwelling ureteral stent (e.g., Gibbons or double-J type)

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🧭 At a Glance

Field	Detail
CPT Code	52332
Code Family	Surgery / Urinary System / Endoscopy — Cystoscopy, Urethroscopy, Cystourethroscopy
Section	52000-52700 (Endoscopy — Vesical)
Laterality	Unilateral per code unit; bilateral requires modifier -50 or two line items with -LT/-RT
wRVU	~3.21 (verify against current CMS Physician Fee Schedule)
Assistant Payable	❌ No — assistant surgeon is not payable under Medicare for this procedure
Co-Surgery	❌ Not applicable
Team Surgery	❌ Not applicable
Global Period	000 days (zero-day global)
Facility vs. Non-Facility	Both — reportable in facility (hospital/ASC) and non-facility (office) settings; RVU varies by setting
Anesthesia	General, regional, MAC, or local with sedation — varies by patient and setting
NCCI Edits	Multiple — see bundling section below
Fluoroscopy	May be separately reported when performed — see details below

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📖 Detailed Description

CPT 52332 describes the endoscopic (cystourethroscopic) placement of an indwelling ureteral stent — a hollow, flexible tubular device placed within the ureter to maintain ureteral patency and facilitate drainage of urine from the renal pelvis to the urinary bladder. This is one of the most frequently performed urological procedures in both the inpatient and outpatient setting, serving as a cornerstone intervention for ureteral obstruction, peri-operative ureteral protection, and management of urolithiasis.

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Anatomy and Physiological Context

The ureter is a muscular tube approximately 25-30 cm in length extending bilaterally from the renal pelvis to the posterior bladder wall. It is divided into three segments:

• Proximal ureter — from the ureteropelvic junction (UPJ) to the upper sacrum
• Mid ureter — overlying the sacrum
• Distal ureter — from the pelvic brim to the ureterovesical junction (UVJ), including the intramural segment

Obstruction at any level — from calculus impaction, extrinsic compression by tumor or lymph nodes, edema following instrumentation, stricture formation, or external compression from adjacent surgical anatomy — can result in hydronephrosis, renal colic, infection, and progressive renal injury. The ureteral stent functions by bridging the obstruction and allowing passive urine drainage alongside and through the stent lumen.

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The Indwelling Ureteral Stent

The prototypical stent captured by 52332 is the double-J (DJ) stent (also called a double-pigtail stent), characterized by:

• A proximal coil that resides within the renal pelvis, preventing proximal migration
• A straight shaft traversing the length of the ureter
• A distal coil that resides within the urinary bladder, preventing distal migration
• A pull string (sometimes attached for outpatient removal without cystoscopy)

Other stent types also captured under 52332 include:

• Gibbons stent — a straight, rigid stent with flanged ends; historical design, largely replaced by double-J
• Spiral stents — for tortuous ureters or long-segment obstruction
• Metal ureteral stents (e.g., Resonance, Allium) — used for malignant obstruction where polymer stents fail; placed via the same cystourethroscopic approach
• Tandem ureteral stents — dual stents placed side by side in cases of refractory malignant obstruction

Stents are available in varying calibers (4.7-8 Fr) and lengths (20-30 cm), selected based on patient height and ureteral anatomy.

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Procedural Overview

The procedure is performed in a retrograde fashion via the cystourethroscope:

1. Patient positioning — lithotomy
2. Cystourethroscopy — rigid or flexible cystoscope introduced transurethrally; bladder is inspected; ureteral orifice is identified
3. Guidewire passage — a flexible hydrophilic or stiff guidewire is advanced under fluoroscopic or direct visualization through the ureteral orifice and advanced to the renal pelvis
4. Stent loading and delivery — the double-J stent is loaded over the guidewire and advanced using a pusher catheter until the proximal coil is confirmed in the renal pelvis (fluoroscopic confirmation)
5. Guidewire removal — the wire is withdrawn, allowing the distal coil to form in the bladder
6. Confirmation — fluoroscopic or direct visualization confirms satisfactory stent position
7. Cystoscope removal and dressing

Fluoroscopic guidance is strongly recommended and commonly employed but is separately reportable (see fluoroscopy section below).

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✅ Includes

• Cystourethroscopy (diagnostic inspection of urethra and bladder is inherent to the approach)
• Retrograde advancement of guidewire to the renal pelvis
• Ureteral orifice cannulation
• Placement and positioning of the double-J or equivalent indwelling stent
• Stent pusher advancement and guidewire withdrawal
• Visual or fluoroscopic confirmation of stent position (when fluoroscopy is used by the same provider and NOT separately billed — see note below)
• Routine bladder irrigation
• Unilateral procedure per code unit

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❌ Excludes / Parenthetical Notes

Excluded/Separate Service	Code	Notes
Bilateral ureteral stent placement	52332-50 or two line items	Bilateral is NOT captured in a single unit of 52332; must use modifier -50 or -LT/-RT
Fluoroscopic guidance	74420 or 74485	When fluoroscopy is performed and interpreted by the same provider performing the stent placement, it may be separately reported; when performed by a separate radiologist, that provider bills independently — see fluoroscopy section
Cystourethroscopy with ureteral catheterization only (no stent)	52005	Diagnostic ureteral catheterization without stent placement — a distinct, lesser service
Cystourethroscopy with ureteroscopy (diagnostic)	52351	Endoscopic ureteroscopy without therapeutic intervention
Ureteroscopy with lithotripsy (laser, ultrasonic, or electrohydraulic)	52353	Stent placement following ureteroscopy with lithotripsy — see bundling discussion below
Ureteroscopy with stone basket extraction	52352	Same session as stone removal — see bundling
Ureteroscopy with biopsy	52354	If ureteroscopy and biopsy also performed
Ureteroscopy with incision of stricture	52346	If endoscopic incision performed at same session
Percutaneous nephrostomy tube placement	50040	Antegrade (percutaneous) approach — distinct from retrograde stent placement
Stent exchange (removal + replacement)	52332 may apply for the new stent; 52310/52315 for removal — payer-specific	Some payers bundle exchange as a single 52332; others require both codes — verify payer policy
Urodynamic studies	51726-51798	Distinct diagnostic services
Injection procedure for ureteropyelography	52005	Retrograde pyelogram via catheter — distinct from stent placement
Retrograde pyelogram performed at same session as stent placement	52005 or 74425	Separately reportable when a formal retrograde pyelogram is performed as a distinct diagnostic service at the same session — verify NCCI
Open ureteroneocystostomy	50780-50785	Open surgical reimplantation — stent placed at open surgery is integral to the open procedure
Laparoscopic or robotic ureteral procedures	Various	If 52332 is performed at a separate cystoscopy session from any concurrent open/laparoscopic procedure, it may be separately reportable

⚠️ Critical NCCI Bundling — Ureteroscopy with Stent Placement: One of the most frequently encountered billing scenarios in urology. When 52332 is reported alongside ureteroscopy with therapeutic intervention codes (52352, 52353, 52354, 52355), NCCI edits bundle 52332 as a column 2 (included) component. The rationale is that stent placement following ureteroscopy is considered a routine component of the ureteroscopic procedure.

However, when the stent placement is performed at a separate, distinct session from the ureteroscopy (e.g., preoperative stenting the day before ureteroscopy, or postoperative stent placement after a prior procedure), 52332 is separately reportable.

When using modifier -59 or -XS to unbundle 52332 from a ureteroscopic procedure, documentation must clearly support that the stent placement was a distinct service — for example, performed through a separate cystoscopy for a distinct indication at a different anatomical site, or at a different session entirely.

⚠️ NCCI Bundling — 52332 with 52351 (Diagnostic Ureteroscopy): 52332 is also bundled with 52351 (diagnostic ureteroscopy). If a diagnostic ureteroscopy is upgraded to a therapeutic procedure at the same session, report only the therapeutic code — not 52351 separately.

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📡 Fluoroscopy Reporting — Important Nuance

fluoroscopy is used in the vast majority of ureteral stent placements to confirm guidewire and stent position in real time. Reporting of fluoroscopy depends on who performs it and under what circumstances:

Scenario	Reporting
Urologist performs and interprets fluoroscopy in the OR/procedure suite	Urologist may separately report 74420 (Urography, retrograde, with or without KUB) or 74485 (Nephrostomy/ureterostomy dilation or stent placement, imaging guidance) — check current CPT and payer rules
Radiologist separately supervises and interprets fluoroscopy	Radiologist reports the appropriate supervision and interpretation code; urologist does not report it
Fluoroscopy used only for guidance, not formally interpreted or documented	Not separately reportable — considered part of the procedure
C-arm fluoroscopy performed in ASC by OR staff without formal S&I documentation	Not separately reportable

💡 Practical Note: In most community practice settings, the urologist uses C-arm fluoroscopy in the operating room without a formal written radiology interpretation. In this scenario, fluoroscopy is not separately reportable. A formal written interpretation of the fluoroscopic images, documented in the medical record, is required to support a separate radiology billing. Verify this with your facility and payer contracts.

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🔗 Code Tree — Cystourethroscopy / Endoscopy Family (52000-52700)

Surgery → Urinary System → Endoscopy (Cystoscopy / Urethroscopy / Cystourethroscopy)
│
├── Diagnostic Cystoscopy
│   ├── 52000 — Cystourethroscopy (separate procedure)
│   └── 52001 — Cystourethroscopy with irrigation and evacuation of multiple obstructing clots
│
├── Ureteral Catheterization / Access
│   ├── 52005 — Cystourethroscopy with ureteral catheterization, with or without irrigation,
│   │               instillation, or ureteropyelography
│   ├── 52007 — Cystourethroscopy with ureteral catheterization with brush biopsy of ureter/renal pelvis
│   └── 52010 — Cystourethroscopy with ejaculatory duct catheterization
│
├── Ureteral Procedures — Stents and Dilation
│   ├── ⭐ 52332 — Cystourethroscopy with insertion of INDWELLING ureteral stent
│   │               (double-J, Gibbons, or equivalent)
│   ├── 52310 — Cystourethroscopy with removal of foreign body, calculus, or ureteral stent;
│   │               simple
│   ├── 52315 — Cystourethroscopy with removal of foreign body, calculus, or ureteral stent;
│   │               complicated
│   ├── 52320 — Cystourethroscopy with removal of ureteral calculus
│   ├── 52325 — Cystourethroscopy with fragmentation of ureteral calculus (non-endoscopic)
│   ├── 52330 — Cystourethroscopy with dilation of ureter, with or without incision of orifice
│   └── 52341-52346 — Cystourethroscopy with treatment of ureteral stricture
│
├── Ureteroscopy (Diagnostic and Therapeutic)
│   ├── 52351 — Ureteroscopy; diagnostic (unilateral)
│   ├── 52352 — Ureteroscopy with removal of calculus or foreign body
│   ├── 52353 — Ureteroscopy with lithotripsy (laser, ultrasonic, or electrohydraulic)
│   ├── 52354 — Ureteroscopy with biopsy and/or fulguration
│   └── 52355 — Ureteroscopy with resection of tumor
│
├── Bladder Endoscopy Procedures
│   ├── 52204 — Cystourethroscopy with biopsy
│   ├── 52214 — Cystourethroscopy with fulguration (including TURBT, minor)
│   ├── 52224 — Cystourethroscopy with fulguration of trigone, bladder neck, prostatic fossa
│   ├── 52234-52240 — TURBT by tumor size
│   └── 52281 — Cystourethroscopy with calibration and/or dilation of urethral stricture
│
└── Vesical Neck / Prostate Endoscopy
    ├── 52601 — TURP, electrosurgical (complete)
    └── 52630 — TURP, residual or regrowth

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🏥 Common ICD-10-CM Diagnoses Paired with 52332

🔴 Urolithiasis — Most Common Indication

ICD-10-CM Code	Description	HCC	Notes
N20.1	Calculus of ureter	❌ None	Most common diagnosis — ureteral stone
N20.0	Calculus of kidney	❌ None	Renal calculus with ureteral obstruction
N20.2	Calculus of kidney with calculus of ureter	❌ None	Combined renal and ureteral stone
N20.9	Urinary calculus, unspecified	❌ None	Use only when laterality/location not specified
N21.0	Calculus in bladder	❌ None	Stone at UVJ or intramural ureter
N13.2	Hydronephrosis with renal and ureteral calculous obstruction	❌ None	When hydronephrosis is documented secondary to stone
N23	Unspecified renal colic	❌ None	Use only when no calculus confirmed

💡 Laterality and Stone Location: ICD-10-CM does not subdivide urolithiasis codes (N20.x) by laterality (right vs. left). The coder relies on the CPT modifier (-LT/-RT) to convey laterality. However, when hydronephrosis is documented (N13.x), side-specific codes exist and should be used when available. Code the stone location as specifically as documented — renal pelvis (N20.0), ureter (N20.1), or both (N20.2).

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🟠 Ureteral Obstruction — Non-Calculous Causes

ICD-10-CM Code	Description	HCC	Notes
N13.1	Hydronephrosis with ureteral stricture, NEC	❌ None	Benign or post-treatment stricture
N13.0	Hydronephrosis with ureteropelvic junction obstruction	❌ None	UPJ obstruction
N13.30	Hydronephrosis, unspecified	❌ None	Use only when etiology not documented
N13.39	Other hydronephrosis	❌ None
N13.4	Hydroureter	❌ None	Dilated ureter without specified obstruction
N13.5	Crossing vessel and stricture of ureter without hydronephrosis	❌ None
N13.6	Pyonephrosis	❌ None	Infected, obstructed collecting system — urgent stenting indication
N28.89	Other specified disorders of kidney and ureter	❌ None	Miscellaneous ureteral pathology
Q62.11	Congenital occlusion of ureteropelvic junction	❌ None	Pediatric/congenital UPJ
Q62.12	Congenital occlusion of ureterovesical orifice	❌ None	Distal ureteral obstruction, congenital

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🔴 Malignant Ureteral Obstruction — High HCC Impact

ICD-10-CM Code	Description	HCC	Notes
C67.9	Malignant neoplasm of bladder, unspecified	HCC 11	UVJ obstruction from bladder tumor
C67.6	Malignant neoplasm of ureteric orifice	HCC 11	Direct orifice involvement
C66.1	Malignant neoplasm of right ureter	HCC 11	Primary ureteral malignancy
C66.2	Malignant neoplasm of left ureter	HCC 11
C61	Malignant neoplasm of prostate	HCC 12	Extrinsic compression of distal ureters
C53.9	Malignant neoplasm of cervix uteri, unspecified	HCC 11	Cervical cancer frequently causes bilateral ureteral obstruction
C54.1	Malignant neoplasm of endometrium	HCC 11
C56.9	Malignant neoplasm of unspecified ovary	HCC 11
C20	Malignant neoplasm of rectum	HCC 11
C18.9	Malignant neoplasm of colon, unspecified	HCC 11
C77.5	Secondary malignant neoplasm of intrapelvic lymph nodes	HCC 8	Nodal disease compressing ureters
C79.19	Secondary malignant neoplasm of other urinary organs	HCC 8
C79.89	Secondary malignant neoplasm of other specified sites	HCC 8	Retroperitoneal metastases

💡 HCC Note — Malignant Obstruction: When 52332 is performed for malignant ureteral obstruction, the primary or secondary malignancy should be reported as the principal diagnosis driving the stent placement. These codes carry significant HCC weight (HCC 8, 11, 12). Do not default to N13.1 (stricture) or N13.30 (hydronephrosis) alone when a malignant etiology is documented — the etiology-specific code provides substantially more clinical and financial accuracy.

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🟡 Perioperative / Prophylactic Stenting

ICD-10-CM Code	Description	HCC	Notes
Z48.811	Encounter for surgical aftercare following surgery on the genitourinary system	❌ None	Postoperative stent exchange or removal encounter
Z48.89	Encounter for other surgical aftercare	❌ None
Z53.8	Procedure not carried out for other reasons	❌ None
N99.89	Other postprocedural complications of genitourinary system	❌ None	Postoperative ureteral edema or stricture
N99.12x	Postprocedural urethral stricture	❌ None	Post-instrumentation stricture
Z09	Encounter for follow-up examination after completed treatment	❌ None	Planned stent exchange follow-up

💡 Prophylactic Preoperative Stenting: Stents placed preoperatively to aid ureteral identification during complex pelvic surgery (hysterectomy, colorectal resection, retroperitoneal dissection) should be coded with the reason for stenting as principal diagnosis — typically the condition requiring the operative procedure (e.g., the malignancy or pelvic mass). The Z-code for the surgical procedure may be used as an additional diagnosis.

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🔵 Renal Failure / Transplant — Significant HCC Context

ICD-10-CM Code	Description	HCC	Notes
N17.9	Acute kidney injury, unspecified	HCC 135	Obstructive AKI — urgent stenting indication
N17.0	Acute kidney injury with tubular necrosis	HCC 135
N18.1	Chronic kidney disease, stage 1	❌ None
N18.2	Chronic kidney disease, stage 2	❌ None
N18.3-	Chronic kidney disease, stage 3 unspecified	HCC 138
N18.31	Chronic kidney disease, stage 3a	HCC 138
N18.32	Chronic kidney disease, stage 3b	HCC 138
N18.4	Chronic kidney disease, stage 4	HCC 138
N18.5	Chronic kidney disease, stage 5	HCC 138
N18.6	End-stage renal disease	HCC 136
T86.19	Other complication of kidney transplant	HCC 136	Transplant ureteral stricture
Z94.0	Kidney transplant status	❌ None	Always report as secondary in transplant patients

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🟢 Infectious / Inflammatory Indications

ICD-10-CM Code	Description	HCC	Notes
N10	Acute pyelonephritis	❌ None	Infected obstructed kidney (pyonephrosis)
N11.1	Chronic obstructive pyelonephritis	❌ None
N13.6	Pyonephrosis	❌ None	Urgently requires stenting or nephrostomy
N39.0	Urinary tract infection, site not specified	❌ None	Concurrent UTI
B37.41	Candidal cystitis	❌ None	Fungal UTI in immunocompromised patients
A41.51	Sepsis due to Escherichia coli	❌ None	Urosepsis with obstructive uropathy — MCC
A41.9	Sepsis, unspecified organism	❌ None	Urosepsis — MCC

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🟣 Pregnancy-Related Ureteral Obstruction

ICD-10-CM Code	Description	HCC	Notes
O26.891	Other specified pregnancy-related conditions, first trimester	❌ None	Physiologic or symptomatic hydronephrosis of pregnancy
O26.892	Other specified pregnancy-related conditions, second trimester	❌ None
O26.893	Other specified pregnancy-related conditions, third trimester	❌ None
O23.21	Infections of urethra in pregnancy, first trimester	❌ None	UTI complicating pregnancy
O23.591	Infection of other part of urinary tract in pregnancy, first trimester	❌ None

💡 Pregnancy Coding Note: Ureteral stenting during pregnancy (for obstructing stones or symptomatic hydronephrosis) must use obstetric codes (O26.x, O23.x) when the condition is pregnancy-related or modified by the pregnancy. Per ICD-10-CM guidelines, when a condition is both present during pregnancy and affecting its management, the obstetric code from Chapter 15 takes sequencing priority.

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🏨 MS-DRG Mapping

CPT 52332 is an endoscopic, non-incisional procedure. In the inpatient setting, its impact on MS-DRG assignment depends on whether it qualifies as an OR procedure for grouping purposes and the principal diagnosis. In most cases, 52332 alone does not trigger a surgical MS-DRG — it groups to a medical MS-DRG unless performed alongside another OR procedure.

Medical MS-DRGs (When 52332 Is the Only Procedure or Is Non-OR)

Clinical Context	MS-DRG (with MCC)	MS-DRG (with CC)	MS-DRG (w/o CC/MCC)
Kidney and Urinary Tract Infections	689	690	690
Kidney and Urinary Tract Stones	693	694	695
Urinary Signs and Symptoms	723	724	725
Other Kidney and Urinary Tract Diagnoses	682	683	684
Malignant diagnosis (when stenting for malignant obstruction — if no OR procedure)	656	657	658

💡 MS-DRG OR Procedure Trigger: In the inpatient setting, 52332 typically does not function as an OR procedure for MS-DRG grouping purposes in most CMS MS-DRG versions. This means the admission groups to a medical DRG based on the principal diagnosis. However, if 52332 is performed in combination with another procedure that does qualify as an OR procedure (e.g., 52353 ureteroscopy with lithotripsy), the surgical DRG is triggered by the OR procedure and 52332 is subordinate.

Surgical MS-DRGs (When 52332 Performed with OR Procedures)

Clinical Context	MS-DRG (with MCC)	MS-DRG (with CC)	MS-DRG (w/o CC/MCC)
Kidney/Ureter stone with surgical procedure	661	662	663
Ureteral surgery for neoplasm	671	672	673
Transurethral procedure with bladder tumor	673	674	675

💡 CC/MCC Opportunities in This Population:

• MCCs: Sepsis/urosepsis (A41.51, A41.9), AKI (N17.9, N17.0), respiratory failure, ESRD (N18.6)
• CCs: CKD stage 3-4 (N18.3—N18.4), UTI (N39.0), hydronephrosis (N13.x), diabetes with complications (E11.65, E11.22), hyponatremia (E87.1), malnutrition
• In the typical stone or obstruction admission, capturing AKI (N17.9) — if documented by the physician in the context of obstructive uropathy — converts a CC-level DRG to MCC-level. CDI query opportunity is high in this population.

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💉 ICD-10-PCS Procedure Codes (Inpatient)

For inpatient encounters, 52332 corresponds to ICD-10-PCS in the Urinary System (T) body system, using root operation Dilation (7) — expanding the orifice or lumen of a tubular body part — with a synthetic substitute (J) representing the stent itself.

ICD-10-PCS Code	Description
0T770DZ	Dilation of right ureter with intraluminal device, open (rarely used — open approach)
0T770ZZ	Dilation of right ureter, open, no device
0T774DZ	Dilation of right ureter with intraluminal device, percutaneous endoscopic
0T774ZZ	Dilation of right ureter, percutaneous endoscopic, no device
0T777DZ	Dilation of right ureter with intraluminal device, via natural or artificial opening (endoscopic via cystoscope)
0T787DZ	Dilation of left ureter with intraluminal device, via natural or artificial opening endoscopic
0T7B7DZ	Dilation of bilateral ureters with intraluminal device, via natural or artificial opening endoscopic

📝 PCS Approach Selection: The cystourethroscopic (retrograde) approach uses Via Natural or Artificial Opening Endoscopic (approach value 8) in ICD-10-PCS. The Device (D) value represents an intraluminal device — which captures the ureteral stent. When bilateral stents are placed at the same session, use the bilateral body part (B) value if available, or code each ureter separately per PCS guidelines. The PCS root operation is Dilation because the stent maintains the lumen of the ureter in a dilated, patent state — it does not cut, excise, or replace tissue.

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🧪 Coding Examples

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✏️ Example 1 — Acute Ureteral Stone with Obstructive AKI, Inpatient Stent Placement

Clinical Scenario: A 48-year-old male presents to the ED with severe right flank pain, fever of 38.9°C, and a creatinine of 3.8 (baseline 1.0). CT scan confirms a 7mm right proximal ureteral calculus (N20.1) with right hydronephrosis (N13.2) and perinephric stranding. He is admitted for inpatient management. Urology performs urgent right cystourethroscopy with retrograde placement of a right double-J ureteral stent. Fluoroscopy is used for guidance and formally interpreted by the urologist with a documented report. He has documented AKI (N17.9) and type 2 diabetes (E11.9).

CPT Reported:

• 52332-RT — Cystourethroscopy with insertion of indwelling ureteral stent, right
• 74420 — Urography, retrograde (if formal fluoroscopy supervision and interpretation is separately documented)

ICD-10-CM (Inpatient Sequencing):

1. N20.1 — Calculus of ureter (PDX — the stone causing the obstruction)
2. N17.9 — Acute kidney injury, unspecified (MCC) — HCC 135
3. N13.2 — Hydronephrosis with renal and ureteral calculous obstruction
4. E11.9 — Type 2 diabetes mellitus without complications

ICD-10-PCS:

• 0T777DZ — Dilation of right ureter with intraluminal device, via natural or artificial opening endoscopic

MS-DRG:

• AKI (N17.9) = MCC; N20.1 as PDX → MS-DRG 693 with MCC (Urinary Stones with Esophagitis with MCC) or MS-DRG 689/690 if grouped to urinary infection category depending on grouper behavior. Verify with your DRG grouper — stone + AKI typically groups to MS-DRG 693.

💡 AKI in the setting of obstructive uropathy (N17.9) is a critical MCC capture. The creatinine of 3.8 with a baseline of 1.0 meets the KDIGO definition of AKI. The urologist/hospitalist must explicitly document “acute kidney injury” in the record — a coder cannot assign N17.9 from lab values alone without physician documentation.

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✏️ Example 2 — Bilateral Malignant Ureteral Obstruction, Cervical Cancer, Bilateral Stents

Clinical Scenario: A 54-year-old female with recurrent cervical cancer (C53.9) presents with bilateral flank pain and creatinine of 5.1. Imaging reveals bilateral hydroureteronephrosis secondary to bulky pelvic lymphadenopathy (C77.5) compressing both ureters. She undergoes bilateral cystourethroscopy with bilateral double-J ureteral stent placement. She has ESRD on hemodialysis (N18.6).

CPT Reported:

• 52332-50 — Cystourethroscopy with insertion of indwelling ureteral stent, bilateral (Or two separate line items: 52332-LT and 52332-RT)

ICD-10-CM:

1. C53.9 — Malignant neoplasm of cervix uteri, unspecified (PDX) — HCC 11
2. C77.5 — Secondary malignant neoplasm of intrapelvic lymph nodes — HCC 8
3. N18.6 — End-stage renal disease (MCC) — HCC 136
4. N13.30 — Hydronephrosis, unspecified (bilateral obstruction)

ICD-10-PCS:

• 0T7B7DZ — Dilation of bilateral ureters with intraluminal device, via natural or artificial opening endoscopic

MS-DRG:

• ESRD = MCC; malignant PDX → DRG grouping into medical malignancy category unless an OR procedure is co-performed → MS-DRG 656 (Kidney and Ureter Procedures for Neoplasm, or if medical only, Other Kidney and Urinary Tract Diagnoses with MCC — verify grouper)

💡 HCC Stacking: Three separate HCC categories are captured here — HCC 11 (cervical malignancy), HCC 8 (secondary malignancy), HCC 136 (ESRD). This significantly elevates the risk adjustment score. Accurate, specific coding on every claim is essential for this patient population throughout the year.

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✏️ Example 3 — Ureteroscopy with Laser Lithotripsy + Stent Placement (NCCI Bundling)

Clinical Scenario: A 35-year-old female with a 9mm left proximal ureteral stone (N20.1) undergoes left ureteroscopy with holmium laser lithotripsy (52353) with complete stone fragmentation. A left double-J ureteral stent is placed at the conclusion of the procedure for ureteral edema/protection.

CPT Reported (Correct):

• 52353-LT — Ureteroscopy with lithotripsy, left (Stent placement at the conclusion of ureteroscopy is bundled into 52353 per NCCI — do NOT separately report 52332)

CPT Reported (Incorrect — NCCI Violation):

• 52353-LT + 52332-LT-59 — ❌ This is an NCCI bundling violation unless a valid, documented distinct service exists

ICD-10-CM:

1. N20.1 — Calculus of ureter (PDX)

⚠️ This is the single most important NCCI bundling scenario associated with 52332. Ureteral stent placement following ureteroscopy with therapeutic intervention is considered integral and is not separately payable. The stent is placed as a routine part of the ureteroscopic procedure to protect the ureter during healing. Reporting 52332 separately in this scenario — even with modifier -59 — without documentation of a truly distinct service constitutes overcoding and is a common audit target.

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✏️ Example 4 — Preoperative Prophylactic Ureteral Stenting Prior to Radical Hysterectomy

Clinical Scenario: A 61-year-old female with endometrial cancer (C54.1) is scheduled for radical hysterectomy. The urologist is asked to perform bilateral prophylactic ureteral stent placement the morning of surgery to facilitate intraoperative ureteral identification and reduce the risk of iatrogenic ureteral injury. Both ureters are stented under cystoscopic guidance in the OR prior to the gynecologic procedure.

CPT Reported (Urology):

• 52332-50 — Bilateral cystourethroscopy with insertion of indwelling ureteral stents, bilateral (prophylactic)

ICD-10-CM:

1. C54.1 — Malignant neoplasm of endometrium (PDX — the condition requiring the surgical intervention) — HCC 11

Notes: Prophylactic ureteral stenting is separately reportable by the urologist as a distinct professional service, even when performed on the same day as the primary surgical procedure by a different surgeon. The gynecologic surgeon bills the hysterectomy; the urologist bills 52332-50 separately. Some payers may require documentation of medical necessity for prophylactic stenting — clinical notes citing complex pelvic anatomy, prior surgery, or malignancy involvement near the ureters supports this.

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✏️ Example 5 — Stent Exchange for Indwelling Stent, Planned Outpatient Procedure

Clinical Scenario: A 58-year-old male with a history of left ureteral transitional cell carcinoma (C66.2) has an indwelling left double-J stent placed 3 months ago for malignant obstruction. He returns for planned stent exchange (removal of old stent + placement of new stent) in the ASC.

CPT Reported:

• 52315-LT — Cystourethroscopy with removal of ureteral stent, complicated (removal of indwelling stent)
• 52332-LT-51 — Cystourethroscopy with insertion of indwelling ureteral stent, left (new stent placement)

💡 Stent Exchange Reporting Controversy: Some payers (including certain Medicare MACs) consider a stent exchange (removal + replacement at same session) to be reportable as a single 52332 only, bundling the removal into the exchange. Others allow both 52315 and 52332. Always verify current payer-specific guidance. Document the removal and replacement as distinct steps in the operative note regardless of billing approach.

ICD-10-CM:

1. C66.2 — Malignant neoplasm of left ureter (active malignancy) — HCC 11
2. Z48.811 — Encounter for surgical aftercare following surgery on the genitourinary system (planned exchange visit)

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✏️ Example 6 — Ureteral Stent for Ureteral Injury During Laparoscopic Colectomy

Clinical Scenario: A 67-year-old male undergoes laparoscopic sigmoid colectomy for diverticulitis (K57.32). Intraoperatively, the surgeon notes concern for left ureteral injury/thermal damage. Urology is emergently consulted and performs intraoperative cystourethroscopy with placement of a left ureteral stent to splint the ureter and assess patency.

CPT Reported (Urology):

• 52332-LT — Cystourethroscopy with insertion of indwelling ureteral stent, left

ICD-10-CM:

1. K57.32 — Diverticulitis of large intestine without perforation or abscess without bleeding (PDX — the condition requiring the original surgery)
2. N99.89 — Other postprocedural complications of genitourinary system (intraoperative ureteral injury/concern)
3. Y83.8 — Surgical procedure as external cause (for the complication)

Notes: Urology separately bills 52332 as a distinct professional service performed as an unplanned, urgently requested consultation procedure during a surgical admission. The general surgeon’s operative note and the urology consultation note should both document the indication clearly.

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📎 Modifier Guidance

Modifier	Use Case
-50	Bilateral stent placement at same session — both ureters stented
-LT / -RT	Designate laterality; many payers require for all unilateral urological procedures
-51	Multiple procedures — apply to 52332 when it is a secondary procedure at the same session (e.g., after 52353) — note NCCI bundling applies in most ureteroscopy + stent scenarios
-59	Distinct procedural service — use only when 52332 is truly a separate, distinct service from a bundled procedure with strong supporting documentation; audit risk is elevated without clear documentation
-XS	Separate structure — a HCPCS modifier sometimes preferred over -59 when the stent is placed in a distinct anatomical location from another concurrent procedure
-52	Reduced services — not typically applicable
-22	Increased procedural complexity — for unusually difficult stent placement (severely tortuous ureter, large impacted stone requiring difficult wire manipulation, prior stricture or surgery) with supporting documentation
-58	Staged or related procedure during global period — if 52332 is performed within the global period of a prior ureteral procedure as a planned second stage
-78	Unplanned return to the OR for related procedure during global period (e.g., stent replacement for dislodgment or malposition)
-79	Unrelated procedure during global period
-TC	Technical component only — applicable when split billing (facility vs. professional)
-26	Professional component only — applicable in split billing scenarios

⚠️ Zero-Day Global Period Impact: 52332 has a 000-day global period, meaning the global surgical package covers only the day of the procedure itself. Postoperative visits the following day or later are separately reportable as E/M services. There is no 90-day global restriction on subsequent visits as there is with major surgical procedures. This is important when billing subsequent cystoscopy for stent removal (52310/52315) — those are always separately payable outside the day of stent placement.

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📝 Operative/Procedure Note Documentation Requirements

To support 52332 and distinguish it from lesser services (e.g., 52005, 52330) and from bundled scenarios, the procedure note should clearly document:

• Indication — stone obstruction, malignant obstruction, prophylactic, postoperative, infection/pyonephrosis, hydronephrosis, etc.
• Laterality — right, left, or bilateral
• Cystourethroscopy performed — approach (rigid vs. flexible scope), findings at cystoscopy, appearance of ureteral orifices
• Type of stent placed — double-J, Gibbons, metal, tandem; manufacturer and lot number per facility policy
• Stent dimensions — French size and length (e.g., 6 Fr × 26 cm)
• Guidewire used — type (hydrophilic, stiff), advancement to renal pelvis confirmed
• Fluoroscopic guidance used? — document whether fluoroscopy was used and whether a formal written interpretation was generated
• Confirmation of satisfactory stent position — coil in renal pelvis, coil in bladder, confirmed by fluoroscopy or direct visualization
• If bilateral — document each ureter separately with individual stent details
• Any difficulty encountered — impacted stone, tortuous ureter, tight stricture, failed passage requiring dilation (supports modifier -22 if used)
• Stent string — whether a pull string was attached and whether patient was instructed on self-removal
• Estimated procedure time, patient tolerance, and disposition

⚠️ Avoid Generic Template Language: Operative notes that read simply “cystoscopy performed, stent placed without difficulty” are minimally supportive. Payers and auditors look for specific documentation of stent type, size, laterality, guidewire use, and fluoroscopic confirmation. A robust operative note is the coder’s most important tool.

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🔑 Key Coding Pearls

💡 Zero-Day Global — Maximize Downstream Billing: Because 52332 carries a 0-day global period, any subsequent procedure (stent removal, stent exchange, ureteroscopy, nephrostomy) billed on a different date is fully separately payable without modifier. There is no global period restriction to worry about beyond the day of service.

💡 Ureteroscopy + Stent = Bundle: The 52332 + 52353 (or 52352, 52354, 52355) bundling issue is the #1 audit target for urologists in NCCI compliance reviews. When stent placement follows ureteroscopy with treatment, 52332 is not separately reportable without a documented, valid distinct service.

💡 Bilateral Reimbursement: 52332-50 (bilateral) is reimbursed at 150% of the unilateral allowable under Medicare. Verify bilateral documentation in the procedure note — both ureters must be individually addressed and documented.

💡 Metal Stents for Malignant Obstruction: Resonance or Allium metal stents placed via the same cystourethroscopic approach are reported under 52332 — there is no separate CPT for metal vs. polymer stent placement via this approach. The distinction matters for supply/implant billing at the facility level, but the professional CPT code is the same.

💡 Antegrade vs. Retrograde: 52332 is exclusively a retrograde (cystourethroscopic) approach. If a stent is placed antegradely through a pre-existing nephrostomy tract or percutaneous access,(percutaneous antegrade ureteral stent). These are distinctly different approaches and codes — read the operative note carefully to determine the approach.

💡 HCC Coding in the Malignant Obstruction Setting: When 52332 is the recurring intervention for a patient with ongoing malignant ureteral obstruction requiring quarterly stent exchanges, the active malignancy codes (C53.9, C61, C66.x, etc.) should be reported at every encounter, not just the first. Active malignancy HCC capture is a recurring annual opportunity — do not allow the malignancy to fall off subsequent claims.

💡 Pregnancy and Stenting: Ureteral stents placed during pregnancy require the obstetric chapter code to lead (e.g., O26.892 for second trimester pregnancy-related complication). The stone or hydronephrosis code may be reported additionally but the obstetric code takes sequencing priority per Chapter 15 guidelines.

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🔗 Related Codes Quick Reference

Code	Description
52000	Cystourethroscopy (diagnostic, separate procedure)
52005	Cystourethroscopy with ureteral catheterization
52310	Cystourethroscopy with removal of ureteral stent, simple
52315	Cystourethroscopy with removal of ureteral stent, complicated
52330	Cystourethroscopy with dilation of ureter
52351	Ureteroscopy, diagnostic
52352	Ureteroscopy with calculus basket extraction
52353	Ureteroscopy with lithotripsy
52354	Ureteroscopy with biopsy and/or fulguration
74420	Urography, retrograde (fluoroscopy)
74485	Dilation of nephrostomy, ureterostomy, or pyelostomy — imaging guidance
N20.1	Calculus of ureter
N13.6	Pyonephrosis
N17.9	Acute kidney injury, unspecified
N18.6	End-stage renal disease
C66.2	Malignant neoplasm of left ureter
C53.9	Malignant neoplasm of cervix uteri, unspecified
T86.19	Other complication of kidney transplant
C77.5	Secondary malignant neoplasm of intrapelvic lymph nodes

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Last reviewed: 2026-03-11 | Verify wRVU values, NCCI edits, global period, and MS-DRG weights against current CMS Physician Fee Schedule, NCCI Policy Manual, and CMS MS-DRG Grouper prior to billing.