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Modifier 50

CPT numeric modifiers (AMA · CPT Appendix A)

Modifier 50. Bilateral Procedure — same procedure on both sides, same session. Typically pays 150% of the unilateral allowance. Report as one line/one unit. Not for codes already described as bilateral.

Reference only — CPT descriptors are AMA-copyrighted (paraphrased). Payment percentages and acceptance vary by payer; verify against the current CPT/HCPCS files and payer policy.

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