CPT 51500: Excision of Urachal Cyst or Sinus, ± Umbilical Hernia Repair - OpenPayer

Summary & Overview

CPT 51500: Excision of Urachal Cyst or Sinus, ± Umbilical Hernia Repair

CPT code 51500 represents the surgical excision of a urachal cyst or sinus and may include concurrent repair of an umbilical hernia. This procedure addresses a congenital or acquired tract between the bladder and umbilicus that can cause infection, drainage, or other complications. Nationally, accurate coding for this operation matters for surgical quality measurement, appropriate reimbursement, and billing consistency across hospitals and ambulatory surgical centers. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for 51500, guidance on typical sites of service and service type, and an outline of what to expect in payer coverage practices and benchmarking. The publication summarizes common modifiers used with surgical procedures, highlights relevant coding considerations, and identifies areas where policy updates or payer-specific rules may affect claims processing. The content is designed for coding professionals, surgical administrators, and policy analysts seeking a clear national overview of how CPT code 51500 is applied and documented in clinical and billing workflows. Data not available in the input will be identified where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare51500CPTurachal cystsinus excisionumbilical hernia repairurologic surgeryambulatory surgerysurgical codingoperative procedure

Billing Code Overview

CPT code 51500 describes the surgical excision of a urachal cyst or sinus, which involves removal of an abnormal connection between the urinary bladder and the umbilicus. The procedure may also include surgical correction of an umbilical hernia when performed during the same operative session.

Service Type: Surgical—Urologic/General Surgery

Typical Site of Service: Operating room or ambulatory surgical center, with postoperative recovery in an outpatient or inpatient setting depending on patient condition and concurrent procedures.

Clinical & Coding Specifications

Clinical Context

A typical patient is a child or young adult presenting with a midline umbilical mass, recurrent periumbilical drainage, localized pain, or signs of infection. The surgical team evaluates history and performs a focused exam noting an umbilical sinus or palpable cystic structure tracking toward the bladder. Preoperative imaging (ultrasound or CT) defines the tract and rules out bladder involvement. The workflow includes preoperative consent, perioperative antibiotics as indicated, general anesthesia, and a lower midline or periumbilical incision. The surgeon excises the urachal cyst or sinus en bloc; if an umbilical hernia is present, simultaneous hernia repair may be performed. Specimens are sent for pathology and cultures when infected. Postoperative care includes wound management, analgesia, and follow-up to monitor healing and rule out recurrence or infection. Typical sites of service are the hospital operating room or ambulatory surgery center depending on patient age, comorbidity, and procedure complexity. Common payors encountered for authorization and billing include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When work or time substantially exceeds typical for `51500` due to extensive dissection or infection.

CPT 51570: Radical Cystectomy, Complete Urinary Bladder Removal

CPT-51565-BLADDER-RESECTION-AND-URETERAL-REIMPLANTATION

CPT 51565: Bladder Resection with Ureteral Reimplantation

CPT-51555-COMPLEX-PARTIAL-CYSTECTOMY-BLADDER-RESECTION

CPT 51555: Complex Partial Cystectomy for Bladder Resection

CPT-51530-BLADDER-TUMOR-EXCISION

CPT 51530: Incision for Removal of Bladder Tumor

CPT-51597-PELVIC-EXENTERATION-BLOC-RESECTION-FOR-UROLOGIC-MALIGNANCY

CPT 51597: Pelvic Exenteration for Bladder, Prostatic, or Urethral Malignancy

CPT-51575-RADICAL-CYSTECTOMY-PELVIC-LYMPHADENECTOMY

CPT 51575: Radical Cystectomy with Pelvic Lymph Node Dissection

CPT-51535-URETEROCELE-EXCISION-REPAIR-BLADDER-INCISION

CPT 51535: Ureterocele Excision or Repair via Bladder Incision

CPT-51525-BLADDER-DIVERTICULECTOMY-OPEN-EXCISION

CPT 51525: Open Excision of Bladder Diverticulum

CPT-51580-RADICAL-CYSTECTOMY-WITH-URINARY-DIVERSION

CPT 51580: Radical Cystectomy with Urinary Diversion

CPT-51595-RADICAL-CYSTECTOMY-URINARY-DIVERSION

CPT 51595: Radical Cystectomy with Urinary Diversion

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Taxonomy Code	Specialty	Notes
`2080S0000X`	General Surgery	Most common specialty performing urachal cyst/sinus excision.
`2080P0220X`	Pediatric Surgery	Common when the patient is a child or adolescent.
`207L00000X`	Urology	Involved when bladder or urinary tract connection is suspected or confirmed.
`207T00000X`	Colon and Rectal Surgery	Occasionally involved for complex lower midline or concurrent abdominal wall pathology.
`208D00000X`	Obstetrics & Gynecology	May be involved for adult female patients with adjacent gynecologic pathology.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`N32.89`	Other specified disorders of bladder	May be used when bladder involvement or abnormal connection from a urachus is suspected.
`K42.9`	Umbilical hernia without obstruction or gangrene	Common concurrent diagnosis when umbilical hernia repair is performed with `51500`.
`K38.9`	Disorder of umbilicus, unspecified	Used for symptomatic umbilical sinus or draining umbilicus when a more specific code is not available.
`A49.9`	Bacterial infection, unspecified	Applied when the urachal cyst presents with local infection without organism specified.
`R10.9`	Unspecified abdominal pain	May be used when the primary complaint is nonspecific abdominal or periumbilical pain leading to discovery of a urachal remnant.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`12032`	Repair of superficial wound, intermediate closure, 2.5 cm to 7.5 cm	May be used for layered closure of the skin and subcutaneous tissue after excision of a small urachal cyst.
`49495`	Re-exploration of stoma, not included elsewhere	Data not directly applicable; Data not available in the input.
`49585`	Repair of umbilical hernia, reducible, age 5 years or older	Commonly performed concurrently when an umbilical hernia is identified during `51500` and requires repair.
`49000`	Exploratory laparotomy, exploratory celiotomy with or without biopsy	May be used when intra-abdominal exploration beyond a localized excision is required due to extensive tract or complications.
`49010`	Laparotomy with exploration, or peritoneal drainage	Used if peritoneal contamination is addressed during the same operative session.
`77021`	Ultrasound guidance for diagnostic or therapeutic procedures	Preoperative ultrasound for localization of the urachal tract or cyst (diagnostic imaging) — note imaging codes are billed separately by radiology.

Note: For any CPT code listed above, apply appropriate modifiers and payer-specific billing rules from Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare when submitting claims.

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