mp-232 - mp-232 - Medical Policies
Biophysical Fetal Profile
Policy Number: MP-232
Latest Review Date: February 2021
Policy Grade: Active Policy but no longer scheduled for regular literature reviews and updates.
Fetal biophysical profile may be considered medically necessary for patients at or after 32 weeks gestation with an increased risk of fetal demise. Conditions associated with an increase risk of fetal demise include:
- Hypertensive disorders
- Diabetes mellitus
- Poorly controlled hyperthyroidism
- Hemoglobinopathies (i.e. sickle cell diseases)
- Cyanotic heart disease
- Systemic lupus erythematosus
- Antiphospholipid syndrome
- Chronic renal disease
- Thyroid disease
- Severe hypoxic lung disease
- Inflammatory bowel disease
- Warfarin (Coumadin, Panwarfin)
- Phenytoin (Dilantin)
- Parvovirus B19
- Hepatitis B
- Herpes simplex virus (HSV-1 or HSV-2)
- Substance abuse
- Pregnancy-related conditions which might include:
- Decreased fetal movement
- Gestational diabetes
- Intrauterine growth restriction
- Post term pregnancy
- Fetal cardiac arrhythmias
- Fetal chromosomal anomalies
- Previous fetal demise (unexplained or recurrent risk)
- Multiple gestations with significant growth discrepancy.
Individual consideration will be given to extremely high-risk pregnancy for BPP to begin at 24 weeks gestation.
Individual consideration will be given to BPPs performed more often that every seven days.
DESCRIPTION OF PROCEDURE OR SERVICE:
A biophysical fetal profile (BPP) is an ultrasonographic assessment of fetal well-being. During the ultrasound, certain behavioral patterns associated with a healthy fetus are documented. The test has five different components, each worth two points (See table below). Indicators such as amniotic fluid volume, fetal breathing, fetal heart rate, movement, and tone are evaluated. A score of 8 or 10 is reassuring, a score of 6 is suspicious and indicates a need for further evaluation, and a score of 4 or less is ominous and indicates a need for immediate intervention. A low score may also reflect the fetus’s behavioral state during the test, such as normal sleep or sedation from maternal use of narcotics or central nervous system depressants. However, a decreasing score has been well correlated with poor outcome and with increasing degrees of fetal acidemia.
A reactive or reassuring NST is defined as one with at least two accelerations in a 20-minute period above the baseline fetal heart rate of 15 beats per minute for 15 seconds. If a reactive pattern is not present at the end of the first 20 minutes, attempts may be made to arouse the fetus. Fetal rest periods, which are reported to be 30 to 40 minutes in duration, must be excluded for the fetus to demonstrate a reactive NST. A nonreactive NST without fetal heart rate decelerations may not indicate fetal jeopardy, but may be an indication for further evaluation. This evaluation may include a biophysical profile (BPP).
The modified BPP consists of the nonstress test (NST) and the amniotic fluid index. It can be just as useful for fetal surveillance in patients at increased risk for poor perinatal outcome and small-for-gestational-age infants.
Components of the Biophysical Profile
Normal (Score = 2)
Abnormal (Score = 0)
Two or more accelerations of at least 15 bpm above baseline for at least 15 sec in 20 minutes
Fewer than 2 accelerations of sufficient height and duration in 20 minutes
Amniotic fluid volume
At least 1 amniotic fluid pocket greater than or equal to 2 cm in vertical pocket or AFI of 5cm
No 2 × 2-cm pockets or AFI <5.0
Fetal breathing movements
1 or more episodes of rhythmic fetal breathing movements for at least 30 sec
Less than 30 sec of fetal breathing
Fetal body movements
At least 3 limb or gross body movements
Fewer than 3 limb or body movements
Extremities in flexion at rest and at least 1 episode of extension of the extremity or spine with return to flexion
Extension at rest or no return to flexion after movement
NOTE: Scoring of the latter four components is done ultrasonographically in a 30-minute observation period. A total score of 8 to 10 is reassuring, a score of 6 is suspicious, and a score of 4 or less is ominous.
AFI, amniotic fluid index (the sum of the largest vertical pocket in each of four quadrants of the uterus).
A literature review was conducted through February 19, 2021.
Summary of Evidence
The are many indications for antepartum fetal surveillance. Common noninvasive tests are non stress tests (NST) and biophysical profiles (BPP). These tests reflect conditions that are associated with increased fetal morbidity and mortality. Conditions that lead to fetal hypoxia, uteroplacental insufficiency, and death are all indications for increased fetal surveillance. No absolute protocols have been established for increased fetal surveillance, but certain practices are accepted for given maternal-fetal risks. For example, weekly antenatal testing beginning the 32nd week of gestation is often performed in women with low to moderate risk, such as those with gestational diabetes, chronic hypertension, or mild preeclampsia. For women with a higher risk of abnormal outcome, earlier and more frequent antenatal testing may be indicated.
U.S. Preventive Services Task Force
Practice Guidelines and Position Statements
The American College of Obstetricians and Gynecologists
ACOG published a practice bulletin in December 2016 regarding ultrasound in pregnancy. They state that indication for specialized examinations, such as the biophysical profile, include fetal growth restriction and multifetal gestation.
In 2014, ACPG published a practice bulletin regarding antepartum fetal surveillance.
- “In growth-restricted fetuses, umbilical artery doppler velocimetry used in conjunction with standard fetal surveillance, such as NSTs or BPPS or both, is associated with improved outcomes (level A evidence)
- Abnormal results from an NST or from a modified BPP generally should be followed by additional testing with either a contraction stress test or BPP. (level B evidence)
- Initiating antepartum fetal testing no earlier than 32 0/7 weeks of gestation is appropriate for most at risk patients. However, in pregnancies with multiple or particularly worrisome high risk conditions (e.g. chronic hypertension with suspected fetal growth restriction), testing might begin at a gestational age when delivery would be considered for perinatal benefit.
- When the clinical condition that prompted testing persists, the test should be repeated periodically to monitor for continued fetal well being until delivery. If the maternal medical condition is stable and test results are reassuring, tests of fetal well being (NST, BPP, modified BPP, or CST) are typically repeated at weekly intervals; however, in the presence of certain high risk conditions, some investigators have performed more frequent testing, although the optimal regimen has not been established (level C evidence).”
The American College of Radiology
According to the ACR, “The BPP is the mainstay of fetal well-being evaluation and consists of four parameters variably sensitive to the acute exposure of the fetus to hypoxemia….. For those at risk for fetal demise, testing strategies usually evaluate one or more of the fetal well-being parameters at least weekly. For the well-being of those fetuses at highest risk for fetal demise, testing can often occur twice weekly or even daily, from the point of postnatal viability until delivery is indicated.”
Biophysical profile, fetal biophysical profile, modified biophysical profile, BPP, fetal well being
APPROVED BY GOVERNING BODIES:
Coverage is subject to member’s specific benefits. Group specific policy will supersede this policy when applicable.
ITS: Home Policy provisions apply
FEP contracts: FEP does not consider investigational if FDA approved and will be reviewed for medical necessity. Special benefit consideration may apply. Refer to member’s benefit plan.
Fetal biophysical profile; with non-stress testing
;without non-stress testing
- American College of Obstetricians and Gynecologists. Practice Bulletin: Antepartum fetal surveillance. Number 145, July 2014.
- American College of Obstetricians and Gynecologists. Practice Bulletin: Ultrasound in Pregnancy. Number 175, December 2016.
- American College of Obstetricians and Gynecologists. Special tests for monitoring fetal well-being. FAQs. Available at: https://www.acog.org/womens-health/faqs/special-tests-for-monitoring-fetal-well-being
- American College of Radiology. ACR appropriateness criteria. Growth disturbances-risk of fetal growth restriction. https://acsearch.acr.org/docs/69377/Narrative/. Accessed February 19, 2021.
- Booker W, Fox NS, Gupta S, et al. Antenatal Surveillance in Twin Pregnancies using the Biophysical Profile. J Ultrasound Med. 2015 Nov;34(11):2071-5.
- Gardner MO and Doyle NM. Asthma in pregnancy. Obstet Gynecol Clin North Am 2004;31(2):385-413.
- Kontopoulos EV and Vintzileos AM. Condition-specific antepartum fetal testing. Am J Obstet Gynecol 2004; 191(5): 1546-51.
- Lewis DF, Adair CD, et al. A randomized clinical trial of daily nonstress testing versus biophysical profile in the management of preterm premature rupture of membranes. Am J Obstet Gynecol 1999; 181(6).
- Manandhar BL, Giri K, Rana A. Fetal biophysical profile score and perinatal outcome. J Nepal Health Res Counc. 2013 Sep; 11(25):269-72.
- Manning FA, Morrison I, et al. Fetal assessment based on fetal biophysical profile scoring: experience in 12,620 referred high-risk pregnancies. 1985; 151(3): 343-50.
- Neff MJ. ACOG releases guidelines on management of post-term pregnancy. Am Fam Physician 2004; 70(11): 2221-25.
- Nageotte MP, Towers CV, et al. The value of a negative antepartum test: Contraction stress test and modified biophysical profile. Obstet Gynecol 1004; 84(2): 231-34.
- Panting-Kemp A, Nguyen T, Castro L. Substance abuse and polyhydramnios. Am J Obstet Gynecol 2002; 187(3).
- Rakel: Textbook of Family Practice, 6th ed. 2002 W.B. Saunders Company.
- Schroeder BM. ACOG practice bulletin on thyroid disease in pregnancy. Am Fam Physician 2002; 65(10): 2158, 2161-62.
- Schroeder BM. ACOG practice bulletin on diagnosing and managing preeclampsia and eclampsia. Am Fam Physician 2002; 66(2): 330-31.
- Vandebosche RC and Kirchner JT. Intrauterine growth retardation. Am Fam Physician 1998; 58(6).
Medical Policy Group, June 2005 (2)
Medical Policy Administration Committee, July 2005
Available for comment July 28-September 10, 2005
Medical Policy Group, June 2008 (1)
Medical Policy Group, September 2012 (3): Effective September 14, 2012 this policy is no longer scheduled for regular literature reviews and updates.
Medical Policy Group, February 2019 (4): Updates to Description, Key Points, and References. Clarified policy statements by adding “Gestational DM” under pregnancy related conditions and removed “Insulin dependent” DM from conditions associated with an increase risk of fetal demise.
Medical Policy Group, February 2021 (4): Updates to Description, Key Points, and References. No change to policy statement.
This medical policy is not an authorization, certification, explanation of benefits, or a contract. Eligibility and benefits are determined on a case-by-case basis according to the terms of the member’s plan in effect as of the date services are rendered. All medical policies are based on (i) research of current medical literature and (ii) review of common medical practices in the treatment and diagnosis of disease as of the date hereof. Physicians and other providers are solely responsible for all aspects of medical care and treatment, including the type, quality, and levels of care and treatment.
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3. The technology must improve the net health outcome;
4. The technology must be as beneficial as any established alternatives;
5. The improvement must be attainable outside the investigational setting.
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1. In accordance with generally accepted standards of medical practice; and
2. Clinically appropriate in terms of type, frequency, extent, site and duration and considered effective for the patient’s illness, injury or disease; and
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