D0473Accession of Tissue, Gross and Microscopic Examination, Preparation and Transmission of Written Report

What This Code Covers

D0473 covers the complete pathology processing of a tissue specimen including receiving the tissue, performing a gross (visual) examination, preparing microscopic slides, performing microscopic examination, and transmitting a written pathology report. This is the standard pathology code for most oral biopsies. The report describes the tissue type, cell characteristics, and diagnosis. This code is billed by the pathology provider.

Billing Guide

Bill this code when:

• A tissue specimen requires both gross and microscopic examination for diagnosis
• The pathologist prepares slides, examines them under a microscope, and issues a written report
• The biopsy was taken to diagnose a lesion, growth, or abnormal tissue in the oral cavity
• Standard pathology processing is needed without surgical margin assessment

Do not bill this code when:

• Only a gross examination was performed with no microscopic review. Use D0472
• Surgical margins need to be assessed (for suspected malignancy). Use D0474
• No written pathology report is generated
• The lab bills under medical CPT codes instead of CDT codes

Insurance and Denial Prevention

Key Payer Rules:

• D0473 is the most commonly billed oral pathology code and most dental plans cover it
• The code is billed by the pathology lab, not the treating dentist
• Payers expect to see an associated biopsy code (D7286/D7287) from the treating dentist
• Medical insurance may cover D0473 when billed with appropriate medical diagnosis codes for suspected malignancy

Common Denials and How to Respond:

• No associated biopsy → Ensure the biopsy procedure code is on file with the payer. Submit both codes if they were not previously submitted together.
• Downgraded to D0472 → If the payer pays at the gross-exam-only rate, appeal with the pathology report showing that microscopic examination was performed.
• Provider not in network → Pathology labs may be out of network. Verify the lab's network status with the patient's plan.