{"code":"Y21.4","type":"category","title":"Drowning and submersion in natural water, undetermined intent","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Drowning and submersion in natural water, undetermined intent is a non-billable ICD-10-CM category code (Y21.4). A more specific billable subcode must be selected for claims submission. 7th character: The appropriate 7th character is to be added to each code from category Y21.","officialDefinition":"Drowning and submersion in natural water, undetermined intent is a non-billable ICD-10-CM category code (Y21.4). A more specific billable subcode must be selected for claims submission. 7th character: The appropriate 7th character is to be added to each code from category Y21.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category Y21"],"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":""}