{"code":"W42.9XXA","type":"code","title":"Exposure to other noise, initial encounter","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["assault (X92-Y09)","contact or collision with animals or persons (W50-W64)","exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)","intentional self-harm (X71-X83)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":["Exposure to sound waves NOS"],"useAdditionalCode":[],"clinicalDefinition":"Exposure to other noise, initial encounter is a billable ICD-10-CM diagnosis code (W42.9A). Inclusion terms: Exposure to sound waves NOS. Excludes1 (not coded here): assault (X92-Y09); contact or collision with animals or persons (W50-W64); exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-); intentional self-harm (X71-X83). 7th character: The appropriate 7th character is to be added to each code from category W42.","officialDefinition":"Exposure to other noise, initial encounter is a billable ICD-10-CM diagnosis code (W42.9A). Inclusion terms: Exposure to sound waves NOS. Excludes1 (not coded here): assault (X92-Y09); contact or collision with animals or persons (W50-W64); exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-); intentional self-harm (X71-X83). 7th character: The appropriate 7th character is to be added to each code from category W42.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category W42"],"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":{"assault (X92-Y09)":"W42","contact or collision with animals or persons (W50-W64)":"W42","exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)":"W42","intentional self-harm (X71-X83)":"W42","Exposure to sound waves NOS":"W42.9"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}