{"code":"C18.4","type":"code","title":"Malignant neoplasm of transverse colon","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["malignant carcinoid tumors of the colon (C7A.02-)","Kaposi's sarcoma of gastrointestinal sites (C46.4)"],"excludes2":["gastrointestinal stromal tumors (C49.A-)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["C18","C18.0","C18.1","C18.2","C18.3","C18.5","C18.6","C18.7","C18.8","C18.9"],"inclusionTerms":[],"sibling_titles":{"code":"C18.9","title":"Malignant neoplasm of colon, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Malignant neoplasm of transverse colon is a billable ICD-10-CM diagnosis code (C18.4). Excludes1 (not coded here): malignant carcinoid tumors of the colon (C7A.02-); Kaposi's sarcoma of gastrointestinal sites (C46.4). Excludes2 (not included here): gastrointestinal stromal tumors (C49.A-).","officialDefinition":"Malignant neoplasm of transverse colon is a billable ICD-10-CM diagnosis code (C18.4). Excludes1 (not coded here): malignant carcinoid tumors of the colon (C7A.02-); Kaposi's sarcoma of gastrointestinal sites (C46.4). Excludes2 (not included here): gastrointestinal stromal tumors (C49.A-).","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":""}