CPT 21700Surgery

Revision of neck muscle

CPT code 21700 covers surgical revision or repair of neck muscles, typically performed to correct previous surgical complications, treat muscle dysfunction, or address trauma-related muscle damage in the neck region.

Showing rates for

National Average

Base Medicare rate

$345.14

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

6.31

PE RVU (NF)

2.8

MP RVU

1.56

Total RVU

10.67

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

NCCI bundling edits

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Billing tips

Document the specific rationale for revision surgery with detailed reference to the failed initial procedure, including dates and outcomes of prior surgery
Impact: Reduces denial risk by 60-70%; lack of revision justification is the leading cause of medical necessity denials for this code
Separately report any nerve repairs or vascular procedures performed during muscle revision using appropriate add-on codes
Impact: Can add $200-800 in additional reimbursement when neurovascular structures are addressed; commonly missed billing opportunity
Bill facility vs non-facility setting correctly as both rates are identical at $345.14, but setting affects global period and incident-to rules
Impact: Incorrect place of service coding triggers automatic denials and delays payment by 30-45 days on average
Use modifier 22 with detailed operative report when revision involves extensive adhesiolysis or multiple muscle groups beyond typical work
Impact: Properly documented modifier 22 claims yield average 25-35% payment increase ($86-121 additional) when approved
Verify prior authorization requirements as many commercial payers classify muscle revision as requiring pre-approval due to high denial rates
Impact: Obtaining prior authorization before surgery prevents 90% of retroactive medical necessity denials
Report concomitant imaging guidance separately when intraoperative ultrasound or fluoroscopy is used to identify muscle planes and scarring
Impact: Adds $75-150 in reimbursement when properly documented; often overlooked in revision surgery billing

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 21700 in 2025?

The 2025 Medicare national average reimbursement for CPT 21700 is $345.14 for both facility and non-facility settings, based on 10.67 total RVUs and the 2025 conversion factor of 32.3465.

How many RVUs is CPT code 21700 worth?

CPT 21700 has 10.67 total RVUs, consisting of 6.31 work RVUs, 2.8 practice expense RVUs (both facility and non-facility), and 1.56 malpractice RVUs.

Can CPT 21700 be billed bilaterally?

Yes, CPT 21700 can be billed bilaterally using modifier 50 when revision surgery is performed on neck muscles on both sides during the same operative session, typically resulting in 150% reimbursement of the base rate.

What documentation is required to bill CPT 21700?

Documentation must include a detailed operative report identifying the specific muscles revised, evidence of prior surgery with dates and outcomes, clinical justification for revision, description of anatomical findings (scar tissue, adhesions), and specific revision techniques employed.

What is the difference between CPT 21700 and primary neck muscle repair codes?

CPT 21700 is specifically for revision surgery on previously operated muscles, requiring documentation of prior surgery and failed outcomes, while primary repair codes are for initial treatment of acute injuries or congenital conditions without prior surgical intervention.

Which medical specialties typically bill CPT 21700?

CPT 21700 is most commonly billed by otolaryngologists (ENT surgeons), plastic and reconstructive surgeons, oral and maxillofacial surgeons, and occasionally by orthopedic or general surgeons performing neck muscle revision procedures.

Why do insurance companies deny CPT 21700 claims?

Common denial reasons include insufficient documentation of medical necessity, failure to demonstrate failed conservative treatment, inadequate proof of prior surgery requiring revision, bundling with other neck procedures, and claims submitted during the global period of recent neck surgery without appropriate modifiers.