{"code":"C00.1","type":"code","title":"Malignant neoplasm of external lower lip","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["malignant melanoma of lip (C43.0)","Merkel cell carcinoma of lip (C4A.0)","other and unspecified malignant neoplasm of skin of lip (C44.0-)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["C00","C00.0","C00.2","C00.3","C00.4","C00.5","C00.6","C00.8","C00.9"],"inclusionTerms":["Malignant neoplasm of lower lip NOS","Malignant neoplasm of lipstick area of lower lip","Malignant neoplasm of vermilion border of lower lip"],"sibling_titles":{"code":"C00.9","title":"Malignant neoplasm of lip, unspecified","isBillable":true},"useAdditionalCode":["code to identify:","alcohol abuse and dependence (F10.-)","history of tobacco dependence (Z87.891)","tobacco dependence (F17.-)","tobacco use (Z72.0)"],"clinicalDefinition":"Malignant neoplasm of external lower lip is a billable ICD-10-CM diagnosis code (C00.1). Inclusion terms: Malignant neoplasm of lower lip NOS; Malignant neoplasm of lipstick area of lower lip; Malignant neoplasm of vermilion border of lower lip. Excludes1 (not coded here): malignant melanoma of lip (C43.0); Merkel cell carcinoma of lip (C4A.0); other and unspecified malignant neoplasm of skin of lip (C44.0-). Use additional code: code to identify:; alcohol abuse and dependence (F10.-); history of tobacco dependence (Z87.891); tobacco dependence (F17.-); tobacco use (Z72.0).","officialDefinition":"Malignant neoplasm of external lower lip is a billable ICD-10-CM diagnosis code (C00.1). Inclusion terms: Malignant neoplasm of lower lip NOS; Malignant neoplasm of lipstick area of lower lip; Malignant neoplasm of vermilion border of lower lip. Excludes1 (not coded here): malignant melanoma of lip (C43.0); Merkel cell carcinoma of lip (C4A.0); other and unspecified malignant neoplasm of skin of lip (C44.0-). Use additional code: code to identify:; alcohol abuse and dependence (F10.-); history of tobacco dependence (Z87.891); tobacco dependence (F17.-); tobacco use (Z72.0).","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":""}