ICD-10-CM Diagnosis Codes Added for Lynch Syndrome Genetic Testing

Effective for dates of service on or after June 1, 2018, the following ICD-10-CM diagnosis codes are added to the list available for procedure codes related to genetic testing for Lynch syndrome. One diagnosis code is required.

Also effective for dates of service on or after June 1, 2018, the presence of synchronous, metachronous colorectal or other Lynch-associated tumors is added to the list of conditions for which services are reimbursable under CPT-4 code 81403 (molecular pathology procedure, Level 4) for Lynch syndrome testing. One of the allowable conditions must be included on a Treatment Authorization Request (TAR).