OBGYN AR aging beyond 90 days is driven by four compounding causes specific to obstetrics and gynecology billing: global period miscoding generating systematic denials, prior authorization failures on advanced gynecologic procedures, Medicaid maternity bundling disputes, and payer-specific timely filing mismatches on split-episode claims. According to MBC’s 2026 RCM services analysis across 140 OBGYN practices, the median OBGYN group carries 31% of total AR beyond 90 days — 9–13 percentage points above the specialty benchmark of 18–22%.
Why OBGYN AR Aging Is a Specialty-Specific Problem
OBGYN AR aging does not follow general billing patterns. The specialty’s revenue cycle has structural complexity that no other specialty shares — global obstetric packages, split antepartum/postpartum billing, concurrent gynecologic procedure coding, and Medicaid maternity enrollment timing — all of which create AR aging patterns that generic denial management workflows are not built to address.
A practice losing revenue through elevated OBGYN AR aging is not experiencing a standard billing failure. It is experiencing a specialty-specific adjudication failure that compounds with every claim that ages past 90 days without targeted intervention.
For a 4-provider OBGYN group billing $3.6M annually, MBC’s 2026 Medical Billing Services data shows a median AR aging gap of $118,000 in claims beyond 90 days — $72,000 of which is recoverable through structured old AR recovery and payer-specific appeal within active timely filing windows.
The 4 Causes of OBGYN AR Aging Beyond 90 Days
Cause 1 — Global Period Miscoding and Payer Disputes
OBGYN global obstetric packages (CPT 59400, 59510, 59610, 59618) cover antepartum care, delivery, and postpartum care as a bundled payment. Payers deny separately billed antepartum or postpartum services as duplicates of the global package — even when the services were rendered by a different provider, at a different location, or outside the global period dates. These denials (CARC 18, CARC 97) accumulate in AR aging because they require clinical documentation of the specific circumstance that justifies separate billing — documentation that standard appeal templates do not include.
Annual exposure for a 4-provider OBGYN group: $22,000–$55,000.
Cause 2 — Prior Authorization Failures on Gynecologic Procedures
Laparoscopic hysterectomy, endometrial ablation, and robotic gynecologic procedures require prior authorization from most commercial payers and MA plans. UnitedHealthcare and Aetna added new PA requirements for minimally invasive gynecologic procedures in 2025. Practices that did not update their PA checklists are generating CARC 197 denials — claims for authorized procedures denied due to NPI mismatches, date-of-service discrepancies, or place-of-service errors in the authorization record.
Annual exposure: $18,000–$42,000 in retroactive PA mismatch denials.
Cause 3 — Medicaid Maternity Bundling Disputes
Medicaid maternity enrollment — the process by which a pregnant patient’s Medicaid coverage is retroactively extended back to the first prenatal visit — creates split-episode billing complexity. When a patient enrolls in Medicaid mid-pregnancy, early antepartum claims already submitted to a commercial payer must be voided, resubmitted to Medicaid, and coordinated across the global package billing rules of two different payers. This process generates 60–120 day AR aging spikes on the retroactive claims — and frequent denial from both payers disputing responsibility for split-episode periods.
Annual exposure: $15,000–$38,000 in Medicaid retroactive enrollment billing disputes.
Cause 4 — Timely Filing Mismatches on Postpartum Claims
Postpartum visits (CPT 59430) are frequently billed weeks after the global package claim is submitted and paid. Commercial payers and MA plans apply timely filing rules from the date of service — not from the global package payment date. Postpartum visits billed 60–90 days after delivery are hitting timely filing walls at payers with 90-day windows. Once past the timely filing deadline, OBGYN AR aging beyond 90 days becomes permanent write-off territory without old AR recovery intervention.
Annual exposure: $8,000–$22,000 in postpartum timely filing denials.
3 Signs Your OBGYN AR Aging Requires Immediate Action
- AR beyond 90 days exceeds 25% of total AR — the OBGYN specialty benchmark is 18–22%. At 25%+, timely filing windows are closing on recoverable claims every week.
- CARC 18 or CARC 97 denials concentrated on global period codes — systematic global period miscoding disputes require specialty-specific appeal documentation, not a generic template.
- Medicaid maternity claims showing 90+ day aging — retroactive enrollment billing disputes are time-bounded. Old AR recovery on these claims must begin within 60 days of the aging threshold.
How MBC Recovers OBGYN AR Aging Beyond 90 Days
MBC’s revenue diagnostic for OBGYN Billing Services runs in 30 days: global period denial categorization by payer, PA mismatch denial audit, Medicaid retroactive enrollment claim identification, postpartum timely filing expiration calculation, and provider-level AR distribution. Output: dollar-quantified recovery opportunity by cause and payer.
Old AR recovery on OBGYN-specific aged claims runs four parallel tracks — global period appeal with clinical documentation of the qualifying exception, retroactive PA correction at UHC and Aetna, Medicaid retroactive enrollment coordination, and expedited postpartum resubmission before timely filing expiration.
Revenue integrity for OBGYN practices means global period billing is documented correctly at claim submission — not corrected on appeal. A specialty-experienced RCM partner with active OBGYN billing engagements knows the global period exception documentation that each payer accepts before the claim is filed, not after it is denied.
Is your OBGYN practice carrying AR aging beyond 90 days that your dashboard isn’t flagging?
MBC’s Revenue Diagnostic identifies every cause of OBGYN AR aging — by payer, by denial type, by provider — and returns a dollar-quantified recovery roadmap in 30 days.
MBC delivers OBGYN Billing Services and Medical Billing Services to physician practices across all 50 US states. Revenue integrity built for OBGYN — not adapted from general billing rules.
Reference Links
American Medical Association CPT Coding Resources
CMS Global Surgery Package Guidelines
FAQs
OBGYN’s global obstetric packages, split-episode Medicaid billing, and gynecologic procedure PA requirements create AR aging complexity that generic billing workflows cannot resolve — the specialty benchmark is 18–22%, but most OBGYN practices carry 28–35% without specialty-specific denial management.
Payers deny separately billed antepartum or postpartum services as duplicates of the global package (CARC 18, CARC 97) — even when the service was legitimately separate. These disputes require clinical documentation of the qualifying exception, which standard appeal templates don’t include, causing claims to age past 90 days unresolved.
Yes — old AR recovery on OBGYN aged claims is viable within each payer’s appeal and reopening window. Global period appeal disputes are recoverable within 60–180 days from denial; Medicaid retroactive enrollment claims within 90–180 days; postpartum timely filing claims within the payer’s retroactive window if reinstatement applies.
Every dollar of unrecovered OBGYN AR aging suppresses Yield EBITDA directly. For a 4-provider group with $118,000 in 90+ day AR at 18% EBITDA margin, that represents $21,240 in suppressed EBITDA — worth $148,680 in enterprise value at a 7× multiple.
MBC’s pricing structure is percentage-of-collections (4–7%) — denial management, old AR recovery on OBGYN-specific aged claims, and global period appeal workflows are all included in the standard RCM services engagement at no separate fee.
A Subject Matter Expert in healthcare billing operations with nearly 10 years of experience, sharing insights on claims processing, coding support, and revenue cycle optimization. Dedicated to educating healthcare professionals on compliance, accuracy, and strategies to improve billing performance.
