{"code":"C43.1","type":"code","title":"Malignant melanoma of eyelid, including canthus","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["melanoma in situ (D03.-)"],"excludes2":["malignant melanoma of skin of genital organs (C51-C52, C60.-, C63.-)","Merkel cell carcinoma (C4A.-)","sites other than skin-code to malignant neoplasm of the site"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["C43.111","C43.112","C43.121","C43.122"],"inclusionTerms":[],"sibling_titles":{"code":"C43.122","title":"Malignant melanoma of left lower eyelid, including canthus","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Malignant melanoma of eyelid, including canthus is a non-billable ICD-10-CM category code (C43.1). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): melanoma in situ (D03.-). Excludes2 (not included here): malignant melanoma of skin of genital organs (C51-C52, C60.-, C63.-); Merkel cell carcinoma (C4A.-); sites other than skin-code to malignant neoplasm of the site.","officialDefinition":"Malignant melanoma of eyelid, including canthus is a non-billable ICD-10-CM category code (C43.1). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): melanoma in situ (D03.-). Excludes2 (not included here): malignant melanoma of skin of genital organs (C51-C52, C60.-, C63.-); Merkel cell carcinoma (C4A.-); sites other than skin-code to malignant neoplasm of the site.","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":""}