{"code":"C09.9","type":"code","title":"Malignant neoplasm of tonsil, unspecified","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["malignant neoplasm of lingual tonsil (C02.4)","malignant neoplasm of pharyngeal tonsil (C11.1)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["C09","C09.0","C09.1","C09.8"],"inclusionTerms":["Malignant neoplasm of tonsil NOS","Malignant neoplasm of faucial tonsils","Malignant neoplasm of palatine tonsils"],"sibling_titles":{"code":"C09.8","title":"Malignant neoplasm of overlapping sites of tonsil","isBillable":true},"useAdditionalCode":["code to identify:","alcohol abuse and dependence (F10.-)","exposure to environmental tobacco smoke (Z77.22)","exposure to tobacco smoke in the perinatal period (P96.81)","history of tobacco dependence (Z87.891)","occupational exposure to environmental tobacco smoke (Z57.31)","tobacco dependence (F17.-)","tobacco use (Z72.0)"],"clinicalDefinition":"Malignant neoplasm of tonsil, unspecified is a billable ICD-10-CM diagnosis code (C09.9). Inclusion terms: Malignant neoplasm of tonsil NOS; Malignant neoplasm of faucial tonsils; Malignant neoplasm of palatine tonsils. Excludes2 (not included here): malignant neoplasm of lingual tonsil (C02.4); malignant neoplasm of pharyngeal tonsil (C11.1). Use additional code: code to identify:; alcohol abuse and dependence (F10.-); exposure to environmental tobacco smoke (Z77.","officialDefinition":"Malignant neoplasm of tonsil, unspecified is a billable ICD-10-CM diagnosis code (C09.9). Inclusion terms: Malignant neoplasm of tonsil NOS; Malignant neoplasm of faucial tonsils; Malignant neoplasm of palatine tonsils. Excludes2 (not included here): malignant neoplasm of lingual tonsil (C02.4); malignant neoplasm of pharyngeal tonsil (C11.1). Use additional code: code to identify:; alcohol abuse and dependence (F10.-); exposure to environmental tobacco smoke (Z77.22); exposure to tobacco smoke in the perinatal period (P96.81); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31); 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":"","noteProvenance":{"malignant neoplasm of lingual tonsil (C02.4)":"C09","malignant neoplasm of pharyngeal tonsil (C11.1)":"C09","code to identify:":"C09","alcohol abuse and dependence (F10.-)":"C09","exposure to environmental tobacco smoke (Z77.22)":"C09","exposure to tobacco smoke in the perinatal period (P96.81)":"C09","history of tobacco dependence (Z87.891)":"C09","occupational exposure to environmental tobacco smoke (Z57.31)":"C09","tobacco dependence (F17.-)":"C09","tobacco use (Z72.0)":"C09"},"hcc":{"mapped":true,"model":"CMS-HCC V28","paymentYear":"2026","categories":[{"hcc":"21","label":"Lymphoma and Other Cancers","family":"Neoplasm","suppresses":[{"hcc":"22","label":"Bladder, Colorectal, and Other Cancers"},{"hcc":"23","label":"Prostate, Breast, and Other Cancers and Tumors"}]}],"otherModels":[{"model":"CMS-HCC V22","hcc":"11"}]}}