International Classification of DiseasesInternational Classification of Functioning, Disability and HealthClinical CodingInternational CooperationDisability EvaluationClassificationDisabled PersonsWorld Health OrganizationUnited StatesTerminology as TopicInternationalityCurrent Procedural TerminologyActivities of Daily LivingInternational AgenciesDatabases, FactualRetrospective StudiesForms and Records ControlNursingDeath CertificatesReproducibility of ResultsHospitalizationIncidenceOutcome Assessment (Health Care)Nursing ProcessCohort StudiesHealth Status IndicatorsHeadache DisordersPatient DischargePhysical and Rehabilitation MedicineRisk FactorsDiagnosisVocabulary, ControlledAge DistributionRehabilitationCause of DeathSocial ParticipationAlgorithmsInternational Normalized RatioHospital RecordsMigraine DisordersAge FactorsDiseaseNursing DiagnosisInfant, NewbornRegistriesEpisode of CarePrevalenceSex DistributionSeverity of Illness IndexMedical RecordsQuestionnairesPopulation SurveillanceTreatment OutcomeDiagnosis-Related GroupsHospital ChargesCross-Sectional StudiesDisabled ChildrenComorbidityVital StatisticsWounds and InjuriesEuropeInsurance Claim ReviewNational Center for Health Statistics (U.S.)ParasomniasStrokePhysical Therapy SpecialtyDelphi TechniqueSex FactorsSensitivity and SpecificityDatabases as TopicHeadacheTime FactorsHealth Systems PlansMigraine without AuraLength of StayCerebral PalsyInpatientsProspective StudiesWorld HealthAbbreviated Injury ScaleInsurance Claim ReportingGoalsRehabilitation CentersDocumentationFollow-Up StudiesSystematized Nomenclature of MedicinePrognosisPhysical Therapy ModalitiesEmergency Service, HospitalMedicareMigraine with AuraHospital MortalityLogistic ModelsChronic DiseaseObserver VariationAustraliaTrigeminal Autonomic CephalalgiasConcept FormationCost of IllnessPredictive Value of Tests