{"code":"W33.12XA","type":"code","title":"Accidental malfunction of hunting rifle, initial encounter","codeAlso":[],"includes":["rifle, shotgun and larger firearm discharge and malfunction NOS"],"modern_v":"official26","codeFirst":[],"excludes1":["accidental airgun discharge and malfunction (W34.010, W34.110)","accidental BB gun discharge and malfunction (W34.010, W34.110)","accidental handgun discharge and malfunction (W32.-)","accidental pellet gun discharge and malfunction (W34.010, W34.110)","assault by rifle, shotgun and larger firearm discharge (X94)","firearm discharge involving legal intervention (Y35.0-)","firearm discharge involving military or war operations (Y36.4-)","intentional self-harm by rifle, shotgun and larger firearm discharge (X73)","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":["Malfunction of hunting rifle NOS"],"useAdditionalCode":[],"clinicalDefinition":"Accidental malfunction of hunting rifle, initial encounter is a billable ICD-10-CM diagnosis code (W33.12A). Includes: rifle, shotgun and larger firearm discharge and malfunction NOS. Inclusion terms: Malfunction of hunting rifle NOS. Excludes1 (not coded here): accidental airgun discharge and malfunction (W34.010, W34.110); accidental BB gun discharge and malfunction (W34.010, W34.110); accidental handgun discharge and malfunction (W32.-); accidental pellet gun discharge and malfunction (W34.","officialDefinition":"Accidental malfunction of hunting rifle, initial encounter is a billable ICD-10-CM diagnosis code (W33.12A). Includes: rifle, shotgun and larger firearm discharge and malfunction NOS. Inclusion terms: Malfunction of hunting rifle NOS. Excludes1 (not coded here): accidental airgun discharge and malfunction (W34.010, W34.110); accidental BB gun discharge and malfunction (W34.010, W34.110); accidental handgun discharge and malfunction (W32.-); accidental pellet gun discharge and malfunction (W34.010, W34.110); assault by rifle, shotgun and larger firearm discharge (X94); firearm discharge involving legal intervention (Y35.0-); firearm discharge involving military or war operations (Y36.4-); intentional self-harm by rifle, shotgun and larger firearm discharge (X73); 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 W33.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category W33"],"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":{"accidental airgun discharge and malfunction (W34.010, W34.110)":"W33","accidental BB gun discharge and malfunction (W34.010, W34.110)":"W33","accidental handgun discharge and malfunction (W32.-)":"W33","accidental pellet gun discharge and malfunction (W34.010, W34.110)":"W33","assault by rifle, shotgun and larger firearm discharge (X94)":"W33","firearm discharge involving legal intervention (Y35.0-)":"W33","firearm discharge involving military or war operations (Y36.4-)":"W33","intentional self-harm by rifle, shotgun and larger firearm discharge (X73)":"W33","assault (X92-Y09)":"W33","contact or collision with animals or persons (W50-W64)":"W33","exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)":"W33","intentional self-harm (X71-X83)":"W33","rifle, shotgun and larger firearm discharge and malfunction NOS":"W33","Injury due to explosion of rifle, shotgun and larger firearm (parts)":"W33.1","Injury due to malfunction of mechanism or component of rifle, shotgun and larger firearm":"W33.1","Injury due to piercing, cutting, crushing or pinching due to (by) slide trigger mechanism, scope or other gun part":"W33.1","Injury due to recoil of rifle, shotgun and larger firearm":"W33.1","Powder burn from rifle, shotgun and larger firearm":"W33.1","Malfunction of hunting rifle NOS":"W33.12"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}