{"code":"T57.1X1A","type":"code","title":"Toxic effect of phosphorus and its compounds, accidental (unintentional), initial encounter","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["organophosphate insecticides (T60.0)","contact with and (suspected) exposure to toxic substances (Z77.-)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["T57","T57.0","T57.0X","T57.0X1","T57.0X1A","T57.0X1D","T57.0X1S","T57.0X2","T57.0X2A","T57.0X2D","T57.0X2S","T57.0X3","T57.0X3A","T57.0X3D","T57.0X3S","T57.0X4","T57.0X4A","T57.0X4D","T57.0X4S","T57.1","T57.1X","T57.1X1","T57.1X1D","T57.1X1S","T57.1X2","T57.1X2A","T57.1X2D","T57.1X2S","T57.1X3","T57.1X3A","T57.1X3D","T57.1X3S","T57.1X4","T57.1X4A","T57.1X4D","T57.1X4S","T57.2","T57.2X","T57.2X1","T57.2X1A","T57.2X1D","T57.2X1S","T57.2X2","T57.2X2A","T57.2X2D","T57.2X2S","T57.2X3","T57.2X3A","T57.2X3D","T57.2X3S","T57.2X4","T57.2X4A","T57.2X4D","T57.2X4S","T57.3","T57.3X","T57.3X1","T57.3X1A","T57.3X1D","T57.3X1S","T57.3X2","T57.3X2A","T57.3X2D","T57.3X2S","T57.3X3","T57.3X3A","T57.3X3D","T57.3X3S","T57.3X4","T57.3X4A","T57.3X4D","T57.3X4S","T57.8","T57.8X","T57.8X1","T57.8X1A","T57.8X1D","T57.8X1S","T57.8X2","T57.8X2A","T57.8X2D","T57.8X2S","T57.8X3","T57.8X3A","T57.8X3D","T57.8X3S","T57.8X4","T57.8X4A","T57.8X4D","T57.8X4S","T57.9","T57.91XA","T57.91XD","T57.91XS","T57.92XA","T57.92XD","T57.92XS"],"inclusionTerms":["Toxic effect of phosphorus and its compounds NOS"],"sibling_titles":{"code":"T57.92XS","title":"Toxic effect of unspecified inorganic substance, intentional self-harm, sequela","isBillable":true},"useAdditionalCode":["code(s):","for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)","personal history of foreign body fully removed (Z87.821)","to identify any retained foreign body, if applicable (Z18.-)"],"clinicalDefinition":"Toxic effect of phosphorus and its compounds, accidental (unintentional), initial encounter is a billable ICD-10-CM diagnosis code (T57.1X1A). Inclusion terms: Toxic effect of phosphorus and its compounds NOS. Excludes1 (not coded here): organophosphate insecticides (T60.0); contact with and (suspected) exposure to toxic substances (Z77.-).","officialDefinition":"Toxic effect of phosphorus and its compounds, accidental (unintentional), initial encounter is a billable ICD-10-CM diagnosis code (T57.1X1A). Inclusion terms: Toxic effect of phosphorus and its compounds NOS. Excludes1 (not coded here): organophosphate insecticides (T60.0); contact with and (suspected) exposure to toxic substances (Z77.-). Use additional code: code(s):; for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70); personal history of foreign body fully removed (Z87.821); to identify any retained foreign body, if applicable (Z18.-). 7th character: The appropriate 7th character is to be added to each code from category T57.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category T57"],"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":{"contact with and (suspected) exposure to toxic substances (Z77.-)":"T57","code(s):":"T57","for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)":"T57","personal history of foreign body fully removed (Z87.821)":"T57","to identify any retained foreign body, if applicable (Z18.-)":"T57","organophosphate insecticides (T60.0)":"T57.1","Toxic effect of phosphorus and its compounds NOS":"T57.1X1"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}