Missing or incomplete date of service (e.g., year missing)

Incomplete name of patient

Charges not itemized

Patient’s or provider’s subscriber and/or group number missing or incorrect

Physician’s signature or facsimile missing

Missing diagnosis or procedural code for service rendered

Code numbers that do not match services rendered

Inappropriate code modifiers

Diagnosis does not support services rendered or procedure codes

Lack of supporting documentation (operative report, emergency room report)

Reasons for multiple visits made in one day not explained

Claim sent to incorrect payer (secondary insurance was billed first, in error)

Claim submitted after acceptable date

Billed items not covered by the policy

Required pre-authorization for procedure not obtained

Required second opinion not obtained

Patient is no longer covered by the plan

Insurer’s address or claim form has changed

 Patient’s insurance coverage has changed

 Illegible handwriting or smudged information