Unlisted service or procedure code, Special report.
Moreover, If no full procedure description code is available: the procedure code not listed should be billed. an unspecified procedure code should be charged. A procedure may not have a CPT or HCPCS code if it is new, rare, or unusual. Codes not listed are assigned when submitting requests for procedures/services where a CPT/HCPCS code is not otherwise specified.
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