CPT 76801 & 76805: Complete OB Ultrasound Billing & Coding Guide (2026)
- Sirius solutions global
- Aug 7
- 6 min read
A practical breakdown of the two most common obstetric ultrasound codes — what each covers, how to document them, and where claims typically fall apart.
⚡ Quick Answer CPT 76801 covers a standard first-trimester obstetric ultrasound performed before 14 weeks 0 days gestation. CPT 76805 covers a standard second- or third-trimester ultrasound performed at 14 weeks 0 days or later. Both are for a single or first gestation, transabdominal approach. They're not billed together for the same exam gestational age at the time of the scan determines which one applies. |
Obstetric ultrasound billing looks simple on paper — pick the code that matches the trimester. In practice, most denials on 76801 and 76805 come from something else entirely: missing report elements, exams performed right at the gestational-age cutoff, or confusion between a standard exam and a limited follow-up scan. Our billing specialists review OB ultrasound claims regularly, and the same handful of issues account for most of the denials. This guide walks through both codes, what documentation each one requires, and how to keep claims clean.
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🔑 Key Takeaways
• 76801 applies before 14 weeks 0 days gestation; 76805 applies at 14 weeks 0 days or later.
• Both codes require a real-time exam with image documentation, not just a limited check.
• Each code is reported once per pregnancy for the standard exam — repeat standard scans without new medical necessity may be denied.
• Add-on codes 76802 (with 76801) and 76810 (with 76805) apply to each additional gestation beyond the first.
• Payer policy varies on frequency limits and bundling — always verify with the specific payer contract.
76801 vs. 76805: Full Comparison
📋 Documentation Checklist
Required Element | 76801 (First Trimester) | 76805 (Second/Third Trimester) |
Gestational age estimate | Yes | Yes |
Fetal number | Yes | Yes |
Cardiac activity | Yes | Yes |
Fetal presentation | Not typically applicable this early | Yes |
Placental location | Yes | Yes |
Amniotic fluid assessment | Yes | Yes |
Uterine and adnexal survey | Yes | Yes, maternal adnexa when visible |
Fetal biometry | Limited at this stage | Yes, measurements appropriate for gestational age |
Archived real-time images | Yes | Yes |
Provider interpretation and signature | Yes | Yes |
Missing even one required element can lead to a denial or, worse, an audit recoupment after payment. If documentation doesn't support the full standard exam, a limited ultrasound code such as 76815 or 76816 may be more appropriate than 76801 or 76805.
Modifier Table
ICD-10 Pairing Examples
Diagnosis Category | Supports | Notes |
Routine pregnancy (Z34 series) | Standard 76801 or 76805 | Confirms routine obstetric monitoring, not a high-risk indication |
Threatened abortion (O20 series) | 76801, when performed in the first trimester | Supports medical necessity for evaluating bleeding or pain |
Multiple gestation (O30 series) | 76801/76802 or 76805/76810 | Supports billing add-on codes for each additional fetus |
Suspected fetal growth restriction | May support 76811 (detailed) instead of 76805 | Confirm whether a detailed anatomic ultrasound is more appropriate |
ICD-10 selection should always reflect the actual clinical indication documented by the provider — never chosen solely to support reimbursement for a specific CPT code.
⚠️ Common Denial Reasons
Reason | Why It Happens | How to Prevent |
Wrong code for gestational age | 76801 used at or past 14 weeks, or vice versa | Confirm exact gestational age before code selection |
Missing required documentation element | Report doesn't include all elements the code requires | Use a standardized documentation template |
Duplicate standard exam without medical necessity | Repeat 76801 or 76805 billed without new indication | Document why a repeat standard exam was necessary, or use modifier 76 |
Global OB package bundling conflict | Ultrasound billed separately when it's bundled into the global fee | Verify payer's global package policy before separate billing |
Missing archived images | Interpretation not supported by retained images | Confirm image retention practices meet payer and compliance standards |
Billing Best Practices
Issue | Recommended Action | Expected Benefit |
Inconsistent gestational-age documentation | Standardize how gestational age is calculated and recorded | Fewer code-selection errors |
Unclear global package bundling rules | Confirm bundling policy per payer before billing separately | Reduced bundling-related denials |
Incomplete ultrasound reports | Use a documentation checklist tied to each CPT code's requirements | Cleaner first-pass claims |
Billing Workflow Timeline
1. Ultrasound performed and interpreted by the provider
2. Report reviewed against the documentation checklist for the applicable code
3. Gestational age confirmed to select 76801 or 76805
4. ICD-10 diagnosis matched to the clinical indication documented
5. Claim scrubbed for bundling conflicts with the global OB package
6. Claim submitted with modifiers applied only where supported by documentation
7. Any denial reviewed for root cause before resubmission or appeal
Myth vs. Fact
Myth | Fact |
76801 and 76805 can be billed together for the same pregnancy visit | Gestational age at the time of the scan determines which single code applies |
A repeat standard ultrasound is always billable | Repeat standard exams need documented medical necessity or they risk denial |
Ultrasound is always billed separately from the global OB package | Many payers bundle routine ultrasounds into the global fee — check the specific policy |
🛡️ Compliance Note
OB ultrasound claims, particularly those involving repeat standard exams or bundling disputes, can draw payer audit attention. Missing documentation elements are one of the most common findings in post-payment reviews. Our compliance team recommends confirming current CMS guidance, CPT coding definitions, and each payer's specific ultrasound frequency and bundling policy before submission, since interpretations vary by payer and can change.
⚡ Expert Tip Build gestational-age confirmation into your documentation workflow before code selection, not after. Catching a 76801/76805 mismatch before submission is far easier than fighting a denial after the fact. |
Accurate OB ultrasound coding is one piece of a larger revenue cycle — our OB/GYN billing services cover the full claim lifecycle, from documentation review through denial management.
🩺 Explore Our OB/GYN Billing Services →
Frequently Asked Questions
What is CPT 76801?
CPT 76801 is the code for a standard first-trimester obstetric ultrasound, performed before 14 weeks 0 days gestation, using a transabdominal approach for a single or first gestation.
What is CPT 76805?
CPT 76805 is the code for a standard second- or third-trimester obstetric ultrasound, performed at 14 weeks 0 days gestation or later, transabdominal approach, single or first gestation.
When should each code be billed?
Code selection depends entirely on gestational age at the time of the exam: before 14 weeks 0 days, use 76801; at or after 14 weeks 0 days, use 76805.
Can 76801 and 76805 be billed together?
No. They represent the same type of standard exam at different gestational stages, so only one applies to a given ultrasound based on gestational age at the time of the scan.
How are these ultrasounds documented?
Each requires a report with gestational age, fetal number, cardiac activity, placental location, amniotic fluid assessment, a uterine and adnexal survey, and archived real-time images, with 76805 also requiring fetal presentation and biometry.
What's the difference between 76801 and a limited ultrasound like 76815?
76801 is a complete standard first-trimester exam meeting all required documentation elements; 76815 is a limited exam addressing a specific, focused question and doesn't require the full standard element list.
Are these codes always billed separately from global OB care?
Not always. Some payers bundle routine ultrasounds into the global maternity package, so it's important to verify the specific payer's policy before billing separately.
What code applies to twins?
For twins in the first trimester, report 76801 for the first gestation plus 76802 for the second; for the second/third trimester, report 76805 plus 76810.
Can a repeat standard ultrasound be billed again later in the same trimester?
Only with documented medical necessity for a repeat standard exam — otherwise, a limited follow-up ultrasound code is typically more appropriate.
Who should manage OB ultrasound coding for a busy practice?
Practices with high OB ultrasound volume often benefit from billing specialists who track payer-specific bundling and frequency rules closely, since these claims are more denial-prone than routine E/M billing.
Final Thoughts
CPT 76801 and 76805 aren't complicated codes, but they're easy to get wrong at the margins — a scan performed right at the 14-week cutoff, a documentation element that got skipped, or a bundling rule that varies by payer. Getting them right consistently comes down to a documentation process that doesn't rely on memory.
Our billing specialists help OB/GYN practices keep ultrasound coding clean, well-documented, and aligned with current CMS and payer guidance. If your practice is seeing denials on obstetric ultrasound claims, it's worth a closer look.
Disclaimer
⚠️ Important This article is provided for general informational and educational purposes only and does not constitute medical, legal, financial, or coding advice specific to any practice or claim. CPT code descriptions reflect general coding concepts as of 2026 and are not a substitute for the official CPT codebook, CMS guidance, AMA resources, ACOG recommendations, or payer-specific policy, all of which should be consulted directly and may change over time. Documentation, medical necessity, frequency limits, and bundling rules vary by payer and by state, and this guide does not guarantee claim acceptance, reimbursement amounts, or audit outcomes. Sirius Solutions Global recommends that practices verify current coding and billing requirements with a qualified coding compliance professional, the AMA, CMS, and each relevant payer before submitting claims. CPT is a registered trademark of the American Medical Association. |
