{"code":"H49.819","type":"code","title":"Kearns-Sayre syndrome, unspecified eye","codeAlso":[", if applicable, other manifestations, such as:","heart block (I45.9)"],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["internal ophthalmoplegia (H52.51-)","internuclear ophthalmoplegia (H51.2-)","progressive supranuclear ophthalmoplegia (G23.1)","nystagmus and other irregular eye movements (H55)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Kearns-Sayre syndrome, unspecified eye is a billable ICD-10-CM diagnosis code (H49.819). Excludes2 (not included here): internal ophthalmoplegia (H52.51-); internuclear ophthalmoplegia (H51.2-); progressive supranuclear ophthalmoplegia (G23.1); nystagmus and other irregular eye movements (H55). Code also: , if applicable, other manifestations, such as:; heart block (I45.9).","officialDefinition":"Kearns-Sayre syndrome, unspecified eye is a billable ICD-10-CM diagnosis code (H49.819). Excludes2 (not included here): internal ophthalmoplegia (H52.51-); internuclear ophthalmoplegia (H51.2-); progressive supranuclear ophthalmoplegia (G23.1); nystagmus and other irregular eye movements (H55). Code also: , if applicable, other manifestations, such as:; heart block (I45.9).","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":"","noteProvenance":{"internal ophthalmoplegia (H52.51-)":"H49","internuclear ophthalmoplegia (H51.2-)":"H49","progressive supranuclear ophthalmoplegia (G23.1)":"H49","nystagmus and other irregular eye movements (H55)":"H49","Progressive external ophthalmoplegia with pigmentary retinopathy":"H49.81"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[{"model":"CMS-HCC V22","hcc":"23"},{"model":"RxHCC V08","hcc":"43"}]}}