Modifier 62: Two Surgeons (Co-Surgeon)

Definition

Modifier 62 is used when two surgeons of equal standing work together as co-surgeons during a procedure. Both surgeons perform the procedure together; neither is assisting the other. Both surgeons perform operative portions and share responsibility. Each surgeon bills the procedure code with modifier 62, and reimbursement is typically 62.5% of the full code value per surgeon (total 125%).

When to Use

Complex spinal surgery requiring two surgeons: Surgeon A and Surgeon B both bill 22612-62 (spinal fusion lumbar)
Cardiovascular surgery where two surgeons work together: Surgeon A and Surgeon B both bill 33510-62 (coronary artery bypass)
Reconstructive surgery with two surgeons: Surgeon A and Surgeon B both bill 27447-62 (knee reconstruction)
Trauma surgery with multiple approaches requiring two concurrent surgeons: both surgeons bill 27236-62 (femur fracture repair)

Documentation Requirements

Operative report should clearly show both surgeons present and working simultaneously on the procedure. Document each surgeon's contribution. Indicate procedure required two surgeons due to complexity. Each surgeon submits operative report referencing the other surgeon's involvement. Both surgeons sign operative report or submit separate reports indicating co-surgeon relationship.

Payer-Specific Rules

Payer	Acceptance	Common Denials	Notes
Medicare	Accepted; 62.5% per surgeon	CO-20: Charge exceeds fee schedule	Each surgeon paid 62.5% of full code. Require operative report showing both surgeons.
Aetna	Accepted; requires documentation	CO-4: Service bundled	Each surgeon paid 62.5% or per contract. Require evidence both worked.
United Healthcare	Accepted; 50-62.5% per surgeon	CO-20: Charge incorrect	Typically 62.5% per surgeon. Some codes may cap at 50%.
Cigna	Accepted with documentation	CO-62: Two surgeons required	Each surgeon 62.5%. Require operative report showing necessity of two surgeons.
Humana	Accepted; standard split	CO-62: Co-surgeon fee schedule	Standard 62.5% per surgeon reimbursement.

Related Modifiers

80 – Assistant surgeon. Use when one surgeon assists the primary surgeon (not equal standing).
81 – Minimum assistant surgeon. Use when assistant provides minimal surgical assistance.
82 – Assistant surgeon (less than available), rarely used.

Common Denials

CARC Code	Reason	Primary Cause
CO-20	Charge exceeds fee schedule	Billed full code charge; must bill with 62.5% reduction.
CO-62	Two surgeons not required	Payer deems procedure does not require two surgeons; denies one surgeon's claim.
CO-4	Service bundled	Payer contract requires one surgeon for this procedure.

FAQ

How much does each co-surgeon get paid?

Each surgeon is paid 62.5% of the procedure code fee (total 125% of code).

Is modifier 62 the same as assistant surgeon?

No. Modifier 62 is two equal surgeons working together. Modifier 80 is assistant surgeon helping primary surgeon.

Can I use modifier 62 for any surgery?

No. Modifier 62 requires the procedure to be complex enough to require two surgeons working simultaneously. Simple procedures do not justify 62.

Prevent These Denials

Ensure co-surgeon claims pay correctly. Use a co-pilot to document two-surgeon necessity.

Related Resources

This reference is current as of 2026-03-23. Payer policies change. Always verify against the payer's latest policy documentation.

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