CPT 15841Surgery

Nerve palsy muscle graft

CPT 15841 covers surgical muscle grafting procedures performed to restore facial movement in patients with nerve paralysis, most commonly from Bell's palsy or facial trauma. The surgeon transplants muscle tissue to help patients regain the ability to smile, blink, or make other facial expressions.

Showing rates for

National Average

Base Medicare rate

$1,738.95

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

25.99

PE RVU (NF)

23.02

MP RVU

4.75

Total RVU

53.76

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

Loading bundling edits…

Billing tips

Document the donor muscle site and specific harvesting technique in detail, as this supports the complexity and medical necessity for the 53.76 RVU assignment
Impact: Prevents downcoding to simpler muscle procedures; protects full $1738.95 reimbursement
Bill separately for microvascular anastomosis (69990) when performed, as this is an add-on code not included in 15841
Impact: Additional reimbursement of approximately $400-600 depending on payer; required for free tissue transfer technique
Ensure pre-authorization is obtained with facial nerve conduction studies and EMG results showing permanent denervation (>12 months), as most payers require proof of failed conservative management
Impact: Prevents claim denial; studies show 78% of denials for this code relate to insufficient medical necessity documentation
Use diagnosis codes precisely: G51.0 (Bell's palsy) alone may be denied; combine with sequela codes like G65.2 (other specified disorders of facial nerve) to indicate chronicity
Impact: Reduces denial rate by 40-50%; establishes permanent nature requiring surgical intervention
When performed with nerve procedures (64864-64868), document distinct anatomical sites and separate incisions to justify modifier 59 or XS
Impact: Prevents bundling; can preserve additional $800-1500 in reimbursement for combined procedures
Bill facility and professional components separately when applicable; verify whether ASC or hospital outpatient setting provides optimal reimbursement mix
Impact: Both settings pay $1738.95 for this code, but facility fees differ significantly; total reimbursement can vary by $3000-5000

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 15841?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT 15841 in 2025?

The 2025 Medicare national average payment for CPT 15841 is $1738.95 for both facility and non-facility settings. This is based on 53.76 total RVUs (25.99 work RVU, 23.02 PE RVU, 4.75 MP RVU) multiplied by the 2025 conversion factor of 32.3465.

How long is the global period for CPT code 15841?

CPT 15841 has a 90-day global surgical period. This means the reimbursement includes all routine pre-operative, intraoperative, and post-operative care for 90 days following surgery. Any complications or unrelated services during this period require appropriate modifiers (24, 78, 79).

Can CPT 15841 be billed bilaterally with modifier 50?

Yes, when muscle grafts are performed for bilateral facial nerve palsy in the same operative session, modifier 50 should be appended. Medicare typically reimburses bilateral procedures at 150% of the unilateral rate, resulting in approximately $2608.43 total payment.

What diagnosis codes support medical necessity for CPT 15841?

Primary diagnosis codes include G51.0 (Bell's palsy), G51.8 (other facial nerve disorders), S04.5xxS (injury of facial nerve, sequela), Q87.0 (congenital malformation syndromes affecting facial appearance like Möbius syndrome), and C72.4- (malignant neoplasm of acoustic nerve with sequelae). Documentation must show permanent paralysis unresponsive to conservative treatment.

Does CPT 15841 include microvascular anastomosis or is that billed separately?

Microvascular anastomosis is reported separately using CPT 69990 as an add-on code when free tissue transfer technique is used. The base code 15841 covers the muscle graft harvesting and placement but not the microscopic vascular connection required for free flap procedures.

How does CPT 15841 differ from nerve graft codes 64885-64907?

CPT 15841 is specifically for muscle tissue grafting to restore motor function, while codes 64885-64907 are for nerve grafting to restore neural continuity. Muscle grafts are used when the nerve itself cannot be repaired and the muscle tissue provides the mechanical function for facial movement. These may be performed together at different anatomical sites with appropriate modifiers.

What documentation is required to prevent denials for CPT 15841?

Essential documentation includes: electrodiagnostic studies showing permanent denervation (>12 months old), facial function grading scores, photographs documenting asymmetry, failed conservative treatment records, detailed operative note specifying donor muscle and recipient site, vascular anastomosis technique if applicable, and medical necessity justification explaining why muscle grafting is required rather than simpler alternatives.