CPT 84479

Description

Assay of thyroid (t3 or t4)

Common Specialties

Endocrinology

Documentation Requirements

• Document clinical indications and clear medical necessity supporting the encounter or procedure.
• Ensure complete provider signatures, credentials, date, and specific place of service (POS).
• Verify documentation strictly supports code specificity to prevent downcoding or claim denials.

Billing & Coding Tips

• Verify current payer fee schedules, NCCI edits, and Medically Unlikely Edits (MUEs).
• Append correct modifiers (e.g., 25, 59, 26, TC) where distinct procedural services or components apply.
• Confirm pre-authorization rules with Medicare, Medicaid, and commercial plans before submission.

Related Codes

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