40844 Reconstruction of mouth
Also known as: free flap mouth reconstruction, extensive oral reconstruction, complex mouth flap
Surgical reconstruction of the oral cavity and lips with very extensive tissue transfer including free flaps or staged procedures.
In Plain Language
major mouth surgery with tissue transplant; extensive oral rebuilding; complex mouth repair
Clinical Context
Used for very large oral defects requiring free tissue transfer with microvascular anastomosis. Common in extensive cancer resection, major trauma, and severe burn reconstruction.
RVU Breakdown
| Work RVU | 16.38 |
| Total RVU | 16.38 |
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 16.38, this code ranks in the 76th percentile among Surgery codes — 2.0x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 40844?
CPT 40844 (Reconstruction of mouth) is a Surgery code. Surgical reconstruction of the oral cavity and lips with very extensive tissue transfer including free flaps or staged procedures.
What is the wRVU value for CPT 40844?
The work RVU for CPT 40844 is 16.38. 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 40844 used?
Used for very large oral defects requiring free tissue transfer with microvascular anastomosis. Common in extensive cancer resection, major trauma, and severe burn reconstruction.
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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.