{"code":"R51.0","type":"code","title":"Headache with orthostatic component, not elsewhere classified","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["atypical face pain (G50.1)","migraine and other headache syndromes (G43-G44)","trigeminal neuralgia (G50.0)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["R51","R51.9"],"inclusionTerms":["Headache with positional component, not elsewhere classified"],"sibling_titles":{"code":"R51.9","title":"Headache, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Headache with orthostatic component, not elsewhere classified is a billable ICD-10-CM diagnosis code (R51.0). Inclusion terms: Headache with positional component, not elsewhere classified. Excludes2 (not included here): atypical face pain (G50.1); migraine and other headache syndromes (G43-G44); trigeminal neuralgia (G50.0).","officialDefinition":"Headache with orthostatic component, not elsewhere classified is a billable ICD-10-CM diagnosis code (R51.0). Inclusion terms: Headache with positional component, not elsewhere classified. Excludes2 (not included here): atypical face pain (G50.1); migraine and other headache syndromes (G43-G44); trigeminal neuralgia (G50.0).","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":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}