OB Billing Compliance Guide: From Routine Care to High-Risk Diagnostics

Obstetrical billing is a sensitive area since the services that are provided during pregnancy include regular checkups and corrective diagnostic tests. Billing regulations are different in each phase of care, including urinalysis and office visits, high-risk monitoring, cost-sharing, and early interventions. 

Distinctive OB billing policies assist providers in making correct claims, avoiding rejections, and staying in line with regulations. These directives not only bring routine, high-risk, and preventive care policies under a single roof, but they also ease adherence to reimbursement policies and promote quality maternal health services.

Understanding Obstetrical Billing Structure and Service Categories

In terms of medical billing, the obstetrical care falls under various service categories, each with its own unique coding and reimbursement policies. These types are regular prenatal care, ancillary services, and high-risk diagnostic procedures.

Global billing can streamline the process of reimbursement of regular services, but this is not the case with every aspect of care. There are some procedures and assessments that need individual billing with the help of suitable CPT, HCPCS, and ICD-10-CM codes.

These types of services include a broad spectrum of clinical and administrative concerns, such as ancillary procedures, diagnostic tests, the role of the provider, and cost-sharing demands. Knowledge of the billing and reimbursement of every component is invaluable in upholding compliance and reducing the denial of claims.

Obstetrical Ancillary Services

Obstetrical ancillary services refer to a system of supportive procedures and visits that are necessary in pregnancy care but need special billing. Whether it is regular urinalysis and office visits or revised supervision policies for non-physician medical practitioners, every service has established its reimbursement policies. 

Proper coding and compliance are needed since misplaced claims can lead to denials. These requirements are described in the sections below to assist the providers in ensuring proper billing and providing quality obstetrics care.

Routine Urinalysis

Both individual antepartum visits and global obstetrical services are already reimbursed with routine urinalysis. Any demand to conduct routine urinalysis in the case of a pregnancy-related diagnosis will be rejected. Nonetheless, urinalysis (routine) is a part of global OB care that is not reimbursable separately.

However, reimbursement may be allowed when:

• A pregnancy diagnosis is present, and
• A secondary diagnosis establishes medical necessity (e.g., UTI symptoms).

Reimbursement is not allowed if paired with any of the following codes:

• Z00.00
  
• Z00.8
  
• Z01.00 – Z01.01
  
• Z01.10
  
• Z01.110
  
• Z01.118
  
• Z01.89
  
• Z02.1
  
• Z02.89
  

For approval, the claim form must clearly include both a pregnancy diagnosis code and an additional code establishing the medical necessity of the urinalysis.

Office Visits

Office visits for conditions unrelated to pregnancy must be billed with the correct office visit code. Acceptable codes include CPT 99202 through 99215 or 99417. Each claim must also include a diagnosis code that is unrelated to pregnancy.

Non-Physician Medical Practitioners: Supervision Changes

According to updated legislative requirements, the Department of Health Care Services (DHCS) has introduced changes to supervision rules for non-physician medical practitioners (NMPs). Details include:

• Certified Nurse-Midwives (CNMs) and Licensed Midwives (LMs) are no longer required to have supervision.
  
• Nurse Practitioners (NPs) are authorized to practice fully within the scope of their education and training, with two newly established categories of NPs.
  
• Physician Assistants (PAs) may provide medical services allowed under the Act if:
  
  • The services are delivered under a practice agreement, and
    
  • The PA is competent to perform those services.

Fetal Stress, Non-Stress Testing

Fetal stress and non-stress testing are special tests that are applied to track high-risk pregnancies and the well-being of the fetus. These services must be properly billed with the help of particular CPT and ICD-10-CM codes and adherence to frequency restrictions. The following guidelines describe the circumstances in which reimbursement is allowed and the claim submission procedure.

Fetal Non-Stress Testing Benefit Guidelines

Reimbursement for fetal monitoring services is restricted to high-risk pregnancies. This applies to the following CPT codes:

• 59020 – Fetal contraction stress test
• 59025 – Fetal non-stress test
• 76819 – Fetal biophysical profile (without non-stress testing)
  

Billing

CPT code 59025 or 76819 may be reimbursed only when submitted with an appropriate antepartum high-risk ICD-10-CM diagnosis code. Eligible codes must fall within the range O09.211 through O9A.513.

Frequency Limit and ICD-10-CM Codes

Reimbursement for CPT code 76819 is allowed only once per week. Within nine months:

• CPT 76819 may be billed up to once per week when medically necessary, typically not to exceed 5 times without additional documentation.
  
• CPT code 59025 may be billed more than ten times, provided the claim includes one of the following high-risk ICD-10-CM diagnosis codes:
  

ICD-10-CM Diagnosis and Description

• O09.212–O09.293: Pregnancy with other poor reproductive history
  
• O09.892, O09.893: Supervision of other high-risk pregnancies
  
• O24.011–O24.919: Diabetes mellitus of pregnancy
  
• O36.5120–O36.5939: Maternal care for known or suspected poor fetal growth
  
• O36.8920–O36.8999: Maternal care for other specified fetal problems
  
• O42.112, O42.113: Preterm premature rupture of membranes
  

Supplies used for fetal stress or non-stress testing are included in the reimbursement rate and cannot be billed separately. Claims submitted with modifier UA or UB will be denied.

For CPT codes 59020, 59025, and 76819:

• Split billing is allowed with modifiers 26 or TC.
  
• When billing both professional and technical components together, modifiers are neither required nor permitted.
  
• These codes may not be billed with modifier 51 (multiple procedures).

Pregnancy Share of Cost (SOC)

Services associated with pregnancy usually have certain cost-sharing policies that need to be adhered to by the providers to be able to bill properly. The collection and obligation of the Share of Cost (SOC) can take different shapes depending on the manner in which the services are billed, either globally or per visit.

Global Billing

Providers who bill on a global basis for obstetrical services must arrange with the patient to collect or obligate the SOC for the month of delivery only.

• SOC must also be collected or obligated for the initial antepartum office visit (HCPCS code Z1032) and for non-global OB services such as sonograms or amniocentesis.
  
• If global billing is not possible due to the patient’s relocation or departure from care, providers must bill on a fee-for-service basis and collect SOC for each month of service.
  

Per-Visit Billing

Providers who bill obstetrical care on a fee-for-service basis are required to collect SOC for every month in which services are rendered.

SOC Common Billing Denial

• RAD code 0314: Recipient is not eligible for the billed month of service.
  

Billing Tip: Always confirm that the recipient has a Share of Cost (SOC) and is eligible for the specific month of service.

Early Pregnancy Diagnostic and Preventive Services in OB Billing

Early prevention and diagnostic services that are early are crucial in detecting the risks of pregnancy at the appropriate time. These services facilitate prompt interventions, as they assist the providers to control complications and guarantee safer outcomes for both the mother and the baby.

Fetal Fibronectin Testing

The fetal fibronectin tests are applied in order to determine pregnant women who might be in need of intensive tocolytic, antibiotic, corticosteroid, and other measures to prevent preterm birth or minimize the risks of complications in labor and delivery. These tests should be done only after two weeks between the 24th and 35th weeks of gestation.

Fetal fibronectin testing is reimbursable when billed with:

• CPT code 82731: Fetal fibronectin, cervicovaginal secretions, semi-quantitative
  
• ICD-10-CM codes O60.02 – Preterm labor without delivery, O60.03 – Preterm labor with preterm delivery

Preventing Preterm Births

Hydroxyprogesterone caproate injections are also applied to extend pregnancy among patients with a history of spontaneous preterm births (before 37 weeks of gestation) who now have a singleton pregnancy.

HCPCS codes:

• J1726 (10 mg)
  
• J1729 (250 mg)
  

These injections are limited to one dose every seven days between 16 and 36 weeks of gestation.

For claims:

• An ICD-10 diagnosis code from the range O09.211 through O09.219 (supervision of pregnancy with history of pre-term labor) must be included.
  

Modifiers SA and UD are allowed.

• Section 340B providers specifically use the modifier UD for drugs purchased under this program.

OB Billing Guidelines for Obstetric Panel Frequency and CPT Code Restrictions

CPT codes 80055 (obstetric panel) and 80081 (obstetrical panel, which includes HIV testing) are restricted to one test per nine-month period for the same provider.

• Reimbursement is allowed for either code 80055 or 80081 during this period, not both.
  
• A second or subsequent obstetric panel may be reimbursed within nine months only if:
  
  • Medical necessity is adequately documented, or
    
  • There is documentation confirming a different pregnancy.

Gender Is Not a Barrier to Pregnancy Services

Pregnancy services are available to all individuals, regardless of gender identity, when applying for Medi-Cal or other health insurance affordability programs.

• A physician must submit a Treatment Authorization Request (TAR) confirming that the requested services are medically necessary.
  
• The TAR overrides gender-specific restrictions on procedure codes, ensuring that anyone reporting a pregnancy, regardless of listed gender, can receive pregnancy-related services.

CureCloudMD’s Excellence in OB Billing: Supporting Routine to High-Risk Care

Managing obstetrical and gynecological billing, especially high-risk pregnancy billing, requires precision, compliance, and a deep understanding of state-specific regulations. At CureCloudMD, we have built proven expertise in handling complex OBGYN medical billing claims with prenatal billing compliance, including ancillary services, fetal stress testing, pregnancy share-of-cost, and diagnostic procedures. 

we have assisted California providers in denying less than 32 claims and made reimbursement timelines better by 27 percent. Our group has a solid understanding of the correct use of ICD-10-CM codes, CPT restrictions, and Medi-Cal guidelines.

This has ensured that CureCloudMD records a high clean claim submission rate of 95 percent within the OBGYN medical billing, due to the changes in legislation. This success is due to our dedication to assist providers in concentrating on patient care without compromising the billing procedures. As the claim accuracy and reimbursement rates increase steadily, our history of success proves that we have real experience in helping to support the practices of OBGYNs throughout California.Contact us via email at [email protected] or call +1 205 947 3264 to start transforming your practice’s financial performance. Your revenue growth and financial peace of mind are our top priorities.