OB/GYN billing combines the complexity of global maternity package rules, split-care component coding, and high-volume gynecologic procedures—each with unique payer rules that change based on who delivers care, when coverage begins, and what complications arise. VeriMedix brings the coding expertise OB/GYN practices need to capture every dollar in a demanding and litigious specialty.
Obstetrical billing centers on one foundational question: did one provider group furnish all three components—antepartum care, delivery, and postpartum care? If yes, a single global code (59400 for vaginal delivery, 59510 for cesarean) is appropriate. If care was split across providers or the patient's coverage changed mid-pregnancy, component codes apply: 59425 (antepartum 4–6 visits), 59426 (antepartum 7+ visits), 59409/59514 (delivery only), and 59430 (postpartum only). Billing the global code when another provider furnished antepartum care is one of the most common—and costly—OB billing errors, often discovered during payer audits. Note: ACOG and AMA have announced restructured obstetric coding effective January 1, 2027, moving to unbundled E/M and delivery codes; practices should begin planning transition workflows.
Services excluded from the global package include diagnostic ultrasounds, non-stress tests, amniocentesis, chorionic villus sampling, laboratory testing beyond routine dipstick urinalysis, and any E/M visits for conditions unrelated to the pregnancy. These are billed separately using appropriate CPT and HCPCS codes. When a pregnant patient presents with an unrelated problem (e.g., URI, urinary tract infection) during the antepartum period, the provider bills a separately identifiable E/M with modifier 24 (unrelated E/M during a post-operative or global period) to distinguish it from the bundled prenatal care. Complications of pregnancy that require additional intensive management beyond the scope of routine global care may also be separately billed with supporting documentation.
Gynecology billing outside the obstetrical context involves a wide range of procedures—hysteroscopy, colposcopy, endometrial biopsy, LEEP, laparoscopy, and in-office contraceptive device insertions—each with its own CPT hierarchy and global period. E/M coding for gynecologic visits now follows the 2021 AMA documentation guidelines based on medical decision-making or total time. Ensuring that pap smears, preventive visits, and problem-focused gynecology visits are coded and billed correctly (preventive vs. diagnostic) is essential for maximizing revenue and minimizing unexpected patient cost-sharing disputes.
Below are commonly billed codes our certified coders manage for ob/gyn practices. Always confirm payer-specific coverage and current code values.
| Code | Description | Billing note |
|---|---|---|
59400 | Routine obstetric care including antepartum care, vaginal delivery (with or without episiotomy/forceps), and postpartum care | Global code; bill only when one provider group furnishes all components; submit at delivery |
59510 | Routine obstetric care including antepartum care, cesarean delivery, and postpartum care | Global cesarean code; includes ~13 antepartum visits, delivery, and 6 weeks postpartum |
59425 | Antepartum care only; 4–6 visits | Use when provider did not perform delivery; one unit for the entire antepartum period |
59426 | Antepartum care only; 7 or more visits | Covers all 7+ antepartum visits in one unit; do not also bill 59425 |
59430 | Postpartum care only (separate procedure) | For postpartum care when a different provider handled antepartum/delivery |
59610 | Routine obstetric care for vaginal birth after previous cesarean (VBAC) with antepartum and postpartum care | Global VBAC code; requires documentation of prior cesarean history |
58300 | Insertion of intrauterine device (IUD) | Separately billable procedure; document type of device inserted; supply billed with A4264 |
57460 | Colposcopy of cervix including upper/adjacent vagina; with loop electrode biopsy(ies) of cervix (LEEP) | 90-day global period; do not bill separately for the colposcopy when LEEP is performed on the same date |
99213 | Office or other outpatient visit, established patient, low MDM or 20–29 minutes | With modifier 25 when a distinct E/M is performed on the same day as an OB/GYN procedure |
Our standard operating procedures for ob/gyn revenue cycle management — the step-by-step workflow we follow on every claim:
These are the issues we see most often in ob/gyn billing — and exactly how we resolve them:
Using 59400 or 59510 when another provider furnished antepartum care (or when the patient transferred mid-pregnancy) results in overpayment and payer recoupment. Fix: implement a check at the time of delivery that confirms the practice initiated antepartum care before 28 weeks gestation and provided at least 4 antepartum visits. If not, switch to delivery-only code (59409 or 59514) and bill 59426/59425 for the antepartum portion actually provided.
Billing individual E/M codes (99212–99215) for routine prenatal visits when the global code will be submitted later is double-billing. Payers will recoup these payments when the global delivery code is submitted. Fix: hold antepartum visit charges and submit the global code at delivery, or use component codes (59425/59426) if the practice will not perform the delivery.
An E/M visit to address a problem unrelated to the pregnancy (e.g., otitis media, hypertension) during the antepartum global period will be denied as bundled unless modifier 24 is appended. Fix: train providers to flag non-pregnancy-related visits; billers apply modifier 24 to the E/M and use the unrelated diagnosis as the primary ICD-10 code.
Laparoscopic procedures, hysteroscopy, sterilization, and some ultrasound types require prior authorization from many commercial payers. Performing these without authorization results in denial or significant reduction. Fix: build a payer-specific authorization matrix for all gynecologic procedures and assign a team member to obtain authorization before scheduling.
VBAC is coded 59610 (global) or 59612/59614 (components). A failed VBAC resulting in cesarean is coded 59618 (global) or 59620/59622 (components). Using 59400 or 59510 for VBAC patients is incorrect coding. Fix: build code selection logic in the PM system tied to delivery type documentation in the delivery note.
Verimedix works inside the systems ob/gyn practices already use, including:
The global obstetric codes (59400, 59510, 59610, 59618) carry an 'MMM' global period designation under the Medicare Physician Fee Schedule, meaning the maternity global period covers the entire antepartum, delivery, and postpartum continuum—not the standard 0-, 10-, or 90-day surgical global periods. Routine pre- and post-delivery visits are bundled into this global payment and should not be billed separately by the delivering provider group during that period. An unrelated E/M is billable during the global period with modifier 24.
Your practice bills antepartum-only codes: 59425 (if 4–6 visits were provided) or 59426 (if 7 or more visits). The delivering physician bills a delivery-only code: 59409 for vaginal or 59514 for cesarean. If postpartum care falls back to your practice, add 59430. No provider should use the global codes in this scenario.
Yes. The initial E/M visit to confirm pregnancy (ICD-10 Z32.01 – encounter for pregnancy test, result positive) before the antepartum record is formally initiated is separately billable as it is not included in the global OB package. Once routine antepartum care begins, subsequent routine prenatal visits are bundled into the global fee.
ACOG and the AMA have announced that the global obstetric package codes (59400, 59510, 59610, 59618) will be deleted January 1, 2027, and replaced with separate E/M codes for antepartum visits and new labor management/delivery codes. Practices should begin transitioning to individual E/M billing for antepartum care in 2026 (especially for patients whose care will span into 2027) and monitor payer-specific transition policies to ensure reimbursement continuity.
Obstetric ultrasounds are not included in the global OB package and are billed separately. Common codes include 76805 (standard obstetric ultrasound, after 14 weeks), 76811 (detailed fetal anatomic exam), 76816 (follow-up/limited), 76817 (transvaginal), and 76818/76819 (fetal biophysical profile). Each requires a separate written report and must be linked to an appropriate ICD-10 diagnosis justifying medical necessity. If only the professional component is provided (e.g., radiologist interprets), append modifier 26.
The global OB package includes routine postpartum visits through approximately 6 weeks (42 days) following delivery. Visits occurring after this window, or visits addressing complications or conditions unrelated to the pregnancy and delivery, are separately billable using appropriate E/M codes. Extended Medicaid postpartum coverage (now up to 12 months in many states) means postpartum care opportunities for Medicaid patients continue long after the global period.
Routine annual well-woman exams are billed with preventive medicine codes (99384–99397, based on age and new vs. established patient status) and may include a pap smear (Q0091 for collection, 88141–88142 for lab interpretation). If the visit also addresses a new problem or chronic condition management beyond the preventive scope, an E/M code (99202–99215) with modifier 25 may be added for the problem-focused portion—but only if the documentation supports a separately identifiable medical decision-making process.
Verimedix handles the entire ob/gyn revenue cycle — coding, submission, denials, and A/R — so your team can focus on patients.