AIUM Accreditation for OB Ultrasound Billing
AIUM ultrasound practice accreditation is a voluntary quality credential that many payers have turned into a billing requirement for the detailed anatomy scan 76811, and increasingly for nuchal translucency 76813. A practice without accreditation, or without an MFM meeting the payer's alternative criteria, will see those claims deny on provider eligibility no matter how good the study was.
What AIUM accreditation actually is
The American Institute of Ultrasound in Medicine accredits ultrasound practices, not individual scans. Accreditation attests that the practice meets published standards across the whole imaging operation:
- Physician and sonographer qualifications, training, and continuing education
- Case volume minimums for the specialty area being accredited
- Documented protocols for each exam type performed
- Image quality, reviewed against submitted case studies
- Report content, timeliness, and physician final review
- Equipment maintenance and quality assurance programs
Accreditation is granted per specialty area. OB practices apply in obstetric ultrasound, and a practice performing detailed fetal anatomic surveys is evaluated on exactly those studies. The cycle is a multi-month application with case submission, then renewal every three years.
Why payers tie it to 76811
76811 pays meaningfully more than the standard anatomy scan 76805, and its clinical value depends entirely on the operator. Payers manage that gap with credentialing gates rather than chart review: many commercial policies pay 76811 only when the billing practice is AIUM-accredited, the interpreting physician is a maternal-fetal medicine specialist, or both. Several large national plans and a number of Medicaid programs publish explicit lists of qualifying credentials, and claims from outside them deny on provider eligibility, typically with remark code N290.
The same logic is spreading to nuchal translucency. 76813 already requires individual NT certification through NTQR or FMF, and some payers now layer a practice-level accreditation requirement on top. Check the payer’s imaging credentialing policy, not just the CPT coverage policy, before adding either study to the schedule.
| Code | Individual credential | Practice credential |
|---|---|---|
76805 | Standard imaging qualifications | Rarely restricted |
76811 | MFM or trained sonologist, payer-defined | AIUM accreditation, many payers |
76813 | NTQR or FMF certification, near-universal | AIUM accreditation, growing |
What non-accredited practices do
A general OB practice that is not accredited and has no MFM on staff has three workable paths, and all three are legitimate billing patterns:
- Refer the study out. Send patients needing a detailed survey to an accredited MFM practice or imaging center, which bills globally. The referring practice bills nothing for the scan and keeps the rest of the pregnancy’s care.
- Bill the standard scan. When the clinical picture supports it, perform and bill
76805. Do not bill 76811 for a standard-depth study performed on non-accredited equipment; the higher code follows the study performed and the credentials behind it, not the scheduling label. - Contract a professional-component overread. The practice performs the scan and bills the technical component (76811-TC), while a credentialed specialist, often an MFM group or a maternal-fetal telemedicine practice, interprets remotely and bills 76811-26. The payer’s credentialing check lands on the interpreting physician, so the arrangement works only when the reading entity meets the payer’s criteria and the technical side still meets image-quality requirements.
The overread model has grown with telemedicine because it keeps the patient and the technical revenue in the local practice while satisfying the credentialing gate. Put the arrangement in writing, keep the interpreting physician enrolled with the relevant payers, and confirm which entity bills which component before the first claim goes out.
What to verify per payer
- Whether the policy requires accreditation, MFM interpretation, or either
- Whether the requirement attaches to the billing NPI, the rendering NPI, or the site
- Whether 76813 is included in the credentialing policy or only the 76811 family
- How the payer registers the credential, some want the AIUM certificate on file before claims pay
- Renewal dates, a lapsed accreditation denies exactly like a missing one
FAQ
Does Medicare require AIUM accreditation for 76811? Traditional Medicare has no national AIUM requirement for 76811, though technical-component suppliers in some settings face separate accreditation rules. The 76811 credentialing gates come mostly from commercial payers and Medicaid plans, so verify plan by plan.
Can an accredited practice bill 76811 for any pregnancy? Accreditation clears the credentialing gate, not medical necessity. The claim still needs a documented high-risk indication; without one, expect a CO-50 denial even from a payer that recognizes the accreditation.
Does individual NT certification substitute for practice accreditation? No, they are different layers. NTQR or FMF certification qualifies the individual measuring and interpreting 76813. AIUM accreditation qualifies the practice. A payer can require either or both.
How long does AIUM accreditation take? Plan on several months from application to decision, including case submission and any corrections. Practices adding 76811 to their service line should start the accreditation clock well before marketing the service.
Who bills what in an overread arrangement? The scanning practice bills the technical component with modifier TC, and the remote interpreting physician bills the professional component with modifier 26. One entity must not bill globally while the other bills a component; that double-dips the claim and both sides deny.