40843 Reconstruction of mouth
Also known as: extensive mouth reconstruction, complex oral reconstruction, mouth flap reconstruction
Surgical reconstruction of the oral cavity involving more extensive tissue transfer and repair including musculocutaneous flaps.
In Plain Language
complex mouth surgery with tissue transfer; extensive oral repair; mouth rebuilding with flaps
Clinical Context
Used for large oral cavity defects requiring muscle and skin flap coverage. Common in head and neck cancer reconstruction, major trauma, and severe burn injuries.
RVU Breakdown
| Work RVU | 12.47 |
| Total RVU | 12.47 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. This code has a 90-day global period, which includes the day of the procedure, 1 day preoperative, and 90 days of postoperative care. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 12.47, this code ranks in the 66th percentile among Surgery codes — 1.6x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 40843?
CPT 40843 (Reconstruction of mouth) is a Surgery code. Surgical reconstruction of the oral cavity involving more extensive tissue transfer and repair including musculocutaneous flaps.
What is the wRVU value for CPT 40843?
The work RVU for CPT 40843 is 12.47. This code is primarily used by Oral and Maxillofacial Surgery, Plastic Surgery, Head and Neck Surgery. It has a 90-day global period.
When is CPT 40843 used?
Used for large oral cavity defects requiring muscle and skin flap coverage. Common in head and neck cancer reconstruction, major trauma, and severe burn injuries.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.