{"code":"R50","type":"category","title":"Fever of other and unknown origin","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["chills without fever (R68.83)","febrile convulsions (R56.0-)","fever of unknown origin during labor (O75.2)","fever of unknown origin in newborn (P81.9)","hypothermia due to illness (R68.0)","malignant hyperthermia due to anesthesia (T88.3)","puerperal pyrexia NOS (O86.4)"],"excludes2":[],"isBillable":false,"sibling_codes":["R50.2","R50.8","R50.81","R50.82","R50.83","R50.84","R50.9"],"inclusionTerms":[],"sibling_titles":{"code":"R50.9","title":"Fever, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Fever of other and unknown origin is a non-billable ICD-10-CM category code (R50). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","officialDefinition":"Fever of other and unknown origin is a non-billable ICD-10-CM category code (R50). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[{"code":"R50.2","title":"Drug induced fever","description":"Drug induced fever is a billable ICD-10-CM diagnosis code (R50.2). Excludes1 (not coded here): postvaccination (postimmunization) fever (R50.83); chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4). Use additional code: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).","isBillable":true,"slug":"r50.2-drug-induced-fever"},{"code":"R50.8","title":"Other specified fever","description":"Other specified fever is a non-billable ICD-10-CM category code (R50.8). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","isBillable":false,"slug":"r50.8-other-specified-fever"},{"code":"R50.81","title":"Fever presenting with conditions classified elsewhere","description":"Fever presenting with conditions classified elsewhere is a billable ICD-10-CM diagnosis code (R50.81). Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4). Code first: underlying condition when associated fever is present, such as with:; leukemia (C91-C95); neutropenia (D70.-); sickle-cell disease (D57.-).","isBillable":true,"slug":"r50.81-fever-presenting-with-conditions-classified-elsewhere"},{"code":"R50.82","title":"Postprocedural fever","description":"Postprocedural fever is a billable ICD-10-CM diagnosis code (R50.82). Excludes1 (not coded here): postprocedural infection (T81.4-); posttransfusion fever (R50.84); postvaccination (postimmunization) fever (R50.83); chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","isBillable":true,"slug":"r50.82-postprocedural-fever"},{"code":"R50.83","title":"Postvaccination fever","description":"Postvaccination fever is a billable ICD-10-CM diagnosis code (R50.83). Inclusion terms: Postimmunization fever. Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","isBillable":true,"slug":"r50.83-postvaccination-fever"},{"code":"R50.84","title":"Febrile nonhemolytic transfusion reaction","description":"Febrile nonhemolytic transfusion reaction is a billable ICD-10-CM diagnosis code (R50.84). Inclusion terms: FNHTR; Posttransfusion fever. Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","isBillable":true,"slug":"r50.84-febrile-nonhemolytic-transfusion-reaction"},{"code":"R50.9","title":"Fever, unspecified","description":"Fever, unspecified is a billable ICD-10-CM diagnosis code (R50.9). Inclusion terms: Fever NOS; Fever of unknown origin [FUO]; Fever with chills; Fever with rigors; Hyperpyrexia NOS; Persistent fever; Pyrexia NOS. Excludes1 (not coded here): chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2); fever of unknown origin in newborn (P81.9); hypothermia due to illness (R68.0); malignant hyperthermia due to anesthesia (T88.3); puerperal pyrexia NOS (O86.4).","isBillable":true,"slug":"r50.9-fever-unspecified"}],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}