{"code":"W21.221A","type":"code","title":"Struck by field hockey puck, initial encounter","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["assault with sports equipment (Y08.0-)","striking against or struck by sports equipment with subsequent fall (W18.01)","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":[],"useAdditionalCode":[],"clinicalDefinition":"Struck by field hockey puck, initial encounter is a billable ICD-10-CM diagnosis code (W21.221A). Excludes1 (not coded here): assault with sports equipment (Y08.0-); striking against or struck by sports equipment with subsequent fall (W18.01); 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 W21.","officialDefinition":"Struck by field hockey puck, initial encounter is a billable ICD-10-CM diagnosis code (W21.221A). Excludes1 (not coded here): assault with sports equipment (Y08.0-); striking against or struck by sports equipment with subsequent fall (W18.01); 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 W21.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category W21"],"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":""}