Linking Diagnoses to Procedures
Each procedure code on a claim must be linked to one or more diagnosis codes that justify the medical necessity of the service. This linkage demonstrates to the payer that the service was appropriate and necessary for treating the patient’s condition.
When entering charges in practice management software, billing specialists assign diagnosis pointers to each procedure. These pointers indicate which of the listed diagnosis codes apply to that particular service. Most payers allow up to four diagnosis pointers per service line.
Primary and Additional Diagnoses
- The primary diagnosis should be listed first and should represent the main reason for the visit or the condition primarily treated.
- Additional diagnoses can be listed to provide a complete clinical picture and support the services billed.
Incorrect or unsupported diagnosis-procedure linkages are a common cause of claim denials. The billing specialist must verify that the assigned codes are consistent with each other and with the documentation in the medical record.