CPT 21076Surgery

Impres&prep surg obt prosth

CPT 21076 covers the impression-taking and preparation work a surgeon does to create a custom obturator prosthesis, which is a device that covers openings in the mouth or palate (often after cancer surgery or for birth defects). This code is for the surgical work done during or immediately after surgery to prepare for the prosthetic device.

Showing rates for

National Average

Base Medicare rate

$864.62

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

13.4

PE RVU (NF)

11.98

MP RVU

1.35

Total RVU

26.73

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

NCCI bundling edits

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Billing tips

Bill on the same date of service as the ablative surgery (maxillectomy, palatectomy) with comprehensive documentation distinguishing the surgical impression work from the later prosthetic fabrication
Impact: Ensures full $864.62 reimbursement; delayed billing or unclear timing documentation results in 30-40% denial rate
Document total surgical time separately for 21076 versus the primary ablative procedure, noting impression materials used, anatomical landmarks captured, and immediate prosthetic planning
Impact: Prevents bundling denials worth $864.62; clear time documentation supports medical necessity and non-duplication
Verify non-facility versus facility status before billing; hospital inpatient/outpatient settings use facility rate ($698.68) while ASCs may qualify for non-facility rate ($864.62)
Impact: Correct place of service coding captures appropriate rate; incorrect POS coding causes $165.94 underpayment or overpayment
Never bundle with prosthetic device codes (D5931, D5932 dental codes) or maxillofacial prosthetic services; 21076 is strictly for surgical impression work by the surgeon
Impact: Prevents claim rejections and ensures clear separation between surgical service ($864.62) and separately reimbursed prosthetic fabrication
For Medicare patients, verify LCD coverage for obturator prosthesis medical necessity in your MAC jurisdiction before performing service; some require prior authorization for defects below certain size thresholds
Impact: Prevents post-service denials; prior authorization compliance ensures payment of full $864.62 versus appeal delays of 60-90 days
When billing with modifier 78 for unplanned return, document why initial impression was inadequate and medical necessity for repeat procedure to justify additional payment

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Frequently asked questions

What is CPT code 21076 used for?

CPT 21076 is used to bill for the surgical impression-taking and preparation work performed by a surgeon to create a surgical obturator prosthesis. This is typically done during or immediately after ablative surgery (like tumor removal from the mouth or palate) to prepare for a device that will cover the surgical opening and restore basic functions like speech and swallowing.

How much does Medicare pay for CPT 21076 in 2025?

Medicare pays $864.62 for CPT 21076 in the non-facility (office) setting and $698.68 in the facility (hospital) setting based on 2025 national average rates. The code has a work RVU of 13.4 and total RVU of 26.73, reflecting the significant surgical expertise required.

Can CPT 21076 be billed with a maxillectomy code?

Yes, CPT 21076 can and should be billed separately from maxillectomy codes when the surgeon performs distinct impression-taking and preparation for a surgical obturator during or after the ablative procedure. Documentation must clearly show the impression work as separate from the tumor resection, with distinct time and materials documented to avoid bundling denials.

Is CPT 21076 a medical or dental code?

CPT 21076 is a medical CPT code for a surgical service, not a dental CDT code. It must be performed by a surgeon (oral surgeon, head and neck surgeon, or plastic surgeon) during the surgical episode. While the resulting prosthetic may later involve dental professionals, the surgical impression itself is a medical service covered under medical insurance, not dental plans.

What documentation is required to bill CPT 21076?

Required documentation includes an operative report clearly stating the surgical impression was performed, defect dimensions and location, impression materials used, anatomical landmarks captured, medical necessity for the obturator, separate time documentation from the primary surgery, and attestation that the surgeon personally performed the impression work. Missing any element significantly increases denial risk.

What modifiers are commonly used with CPT 21076?

Common modifiers include 78 (unplanned return to OR during postop period), 79 (unrelated procedure during postop period), RT/LT (laterality), 58 (staged procedure), and 59 (distinct procedural service). Modifier selection depends on timing relative to the primary surgery and whether multiple defects or sessions are involved.

Why was my CPT 21076 claim denied?

The most common denial reasons are bundling with the primary surgical procedure, classification as a non-covered dental service, lack of medical necessity documentation, or duplicate service confusion with later prosthetic fabrication codes. Appeals require clear documentation showing surgical impression as a distinct service performed by the surgeon during the surgical episode, separate from any dental prosthetic work.