Thank you.Per AAPC Coder, both codes are valid & don't have any Excludes1 or 2 notes related to the other code. There is a CCI relationship between the two codes (Code 20225 is a column 2 code for 27513, but you may use a CCI-associated modifier to override the edit under appropriate circumstances. CCI Edit Rule: Standards of medical / surgical practice.) but, since it seems like an internal edit, I would reach out to a lead or manager to try to validate that before attaching a modifier.