How do I describe this diagram? It is a domain model class diagram of the Print patient invoices use case.

O UN 3 Domain model class diagram Dental Clinic x HOHInvoice Copay Amt Due Copay PD Household HOHID HOHName address telephone Ikey] visitCopay lastPayment Date balance Patient patient ID name DOB gender firstVisitDate lastVisitDate Insurance Invoice insured Amt Due insured PD InsuranceCo Company Name address contactName contactTelephone Office Visit visitID date copay Amt copay PD copay Code Payment paymentID date amount Invoice invoiceID dateSent total amtPreviouslyPD datePD am Refused Procedure procedureDescription totalAmt copay Amt insurance PD insurance Denied descriptionOfTeeth MedicalStaff staff ID name position 100%