CPT Code 58950 Initial Malignancy Resection with Bilateral Salpingo-Oophorectomy & Omentectomy

Initial surgical management of ovarian, fallopian tube, or primary peritoneal malignancy requires meticulous planning, precise coding, and thorough documentation. CPT 58950 represents a high-complexity open abdominal procedure, including bilateral salpingo-oophorectomy and omentectomy, along with resection of visible malignant tissue. Accurate reporting is critical for OBGYN medical billing, ensuring practices capture clinical complexity, support optimal reimbursement, and maintain compliance with payer and CPT guidelines.

Definition and Scope For CPT 58950

CPT 58950, as defined by the American Medical Association (AMA) and referenced on AAPC’s Codify platform, is an initial malignancy-specific resection for ovarian, tubal, or primary peritoneal cancer. The procedure includes:

• Bilateral salpingo-oophorectomy (BSO): removal of both ovaries and fallopian tubes
• Omentectomy: removal of the greater omentum, partial or total, often as part of cytoreduction
• Resection of visible malignant tissue to reduce tumor burden

This high-complexity surgical procedure is performed via an open abdominal approach (laparotomy) and is intended for the initial surgical management of gynecologic malignancy.

When CPT Code 58950 Is Appropriate

Report CPT 58950 when:

• A surgeon performs laparoscopic ovarian cystectomy for a benign‑appearing cyst
• A cyst is excised due to pain, persistent or enlarging size, or suspicion on imaging
• The ovary is preserved, and only the cyst wall is removed

Do not report CPT 58950 when:

• A simple drainage of a cyst is performed without surgical excision
• The ovary is removed entirely (use CPT 58925 or related oophorectomy codes)
• The cystectomy is incidental to another laparoscopic procedure without separate clinical indication

CPT Code 58950 Scenarios

Scenario 1 – Symptomatic Ovarian Cyst

A 35‑year‑old woman presents with persistent pelvic pain and imaging identifies a 6 cm ovarian cyst. The surgeon performs a laparoscopic ovarian cystectomy.

→ Report CPT 58950

Scenario 2 – Suspicious Cyst on Imaging

A patient has an enlarging right ovarian cyst with atypical features on ultrasound. Laparoscopic cystectomy is performed for definitive pathology.

→ Report CPT 58950

Scenario 3 – Incidental Cyst Removal During Hysterectomy

During a laparoscopic hysterectomy, a small benign cyst on the ovary is removed incidentally without documented symptomatic indication.

→ Do NOT report CPT 58950 separately; this is considered part of the primary procedure unless documentation supports a distinct clinical necessity.

Modifier For CPT Code 58950

Modifiers may be applied when appropriate:

• Modifier 59 (Distinct Procedural Service): When the ovarian cystectomy is a distinct operative procedure separate from another primary laparoscopic surgery, supported by documentation.
• Modifier 22 (Increased Procedural Services): When technical difficulty or operative time significantly exceeds expectations, clearly documented in the operative note.

Modifier use must be supported by clear clinical and operative detail.

Documentation Essentials For CPT Code 58950

Accurate documentation should include:

• Indication for cystectomy (e.g., pain, size changes, suspicion on imaging)
• Laterality (right or left ovary)
• Laparoscopic approach and findings
• Description of cyst removal and ovarian preservation
• Separation from any concurrent procedures

Clear operative notes improve payer review and reduce denials.

CPT Code 58950 Reimbursement Considerations

Reimbursement for CPT 58950 varies by payer, place of service, and laterality. CPT 58950 carries a standard global period and should be reported with appropriate ICD‑10 diagnosis codes reflecting cyst pathology (e.g., benign ovarian cyst, pain, or related symptoms). Preauthorization may be required, particularly for elective or benign conditions.

BillingFreedom: Expert OBGYN Medical Billing for High-Complexity Malignancy Surgery

BillingFreedom’s specialized team focuses exclusively on OBGYN medical billing, ensuring every CPT 58950 claim:

• Captures all surgical components, including BSO, omentectomy, and cytoreductive procedures
• Applies modifiers (-22, -59/-XU) correctly for complexity or distinct services
• Reflects clinical necessity, malignancy type, and extent of resection

Maximize Revenue & Reduce Denials

• Coding accuracy: 98–99% for complex OBGYN oncology procedures
• First-pass claim acceptance: 97–99%
• Denial rates: consistently under 3%

Comprehensive Support Services

• Preauthorization guidance for malignancy-specific ovarian, tubal, or peritoneal procedures
• Claims submission, tracking, and denial management
• Continuous updates on AMA CPT changes, NCCI edits, and payer-specific rules
• Detailed operative note review to ensure compliant, accurate reimbursement

Partnering with BillingFreedom allows OBGYN practices to focus on patient care while our team manages complex coding for CPT 58950, ensuring claims are processed efficiently, reimbursement is maximized, and administrative burden is minimized.

For more details about our exceptional medical billing services, please don't hesitate to contact us via email at info@billingfreedom.com or call us at +1 (855) 415-3472. 

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