76536
US soft tissue head/neck (thyroid)
Ultrasound of the soft tissues of the head and neck (typically thyroid; also salivary glands, neck lymph nodes, parathyroid). CMS 2026 global wRVU 0.56, total RVU approximately 1.70, Medicare global allowable approximately $57. The first-line thyroid evaluation imaging.
When to use it
Use 76536 for thyroid ultrasound (the most common indication) or imaging of other soft-tissue structures in the head and neck (salivary glands, parotid mass, cervical lymphadenopathy, parathyroid localization). Standard thyroid indications: thyroid nodule evaluation, monitoring known nodules per TIRADS or ATA guidelines, TSH abnormality workup with palpable thyroid abnormality, follow-up post-thyroidectomy or radioiodine ablation.
Full guidance
Often paired with 76942 (US guidance for needle placement) when biopsy is performed.
Documentation checklist
- ✓Order with indication and target structure.
- ✓Report addresses both lobes of the thyroid (size, echotexture), isthmus, any nodules (size in three dimensions, composition, echogenicity, shape, margins, echogenic foci, TIRADS or ATA classification), cervical lymph nodes when relevant.
- ✓If non-thyroid soft tissue (e.g., parotid mass, lymph node), describe the target lesion with size, echotexture, vascularity.
- ✓Static images.
- ✓Setting modifier; signed report.
Common pitfalls
- !Failing to document nodule characteristics per TIRADS or ATA criteria. Modern guidelines drive biopsy decisions off these structured features; their absence defeats the clinical utility and the audit defense.
- !Billing 76536 for thyroid plus 76536 again for parathyroid imaging on the same encounter. The code is per-encounter for head/neck soft tissue; document all targets in one report.
- !Billing 76942 (US guidance) when a thyroid biopsy is performed bundled into an FNA code. The biopsy code (60100) and the guidance code (76942) are typically separately billable, but the thyroid US (76536) itself is one charge for the encounter.
- !Reading a 76536 and not assessing cervical lymph nodes when nodule features warrant lateral compartment survey. ATA guidelines require concurrent lymph node assessment for suspicious thyroid nodules.
- !Confusing 76536 with 76604 (chest US) for a supraclavicular mass — pick by anatomic primary location and what was actually surveyed.
Payer notes
Medicare and commercial payers cover 76536 routinely for thyroid workup. Some commercial payers require prior auth for serial thyroid US surveillance (e.g., every 6 months); document the indication and any change in nodule characteristics. Parathyroid imaging is often paired with sestamibi (78070-series) for surgical localization.