{"code":"S66.101S","type":"code","title":"Unspecified injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level, sequela","codeAlso":["any associated open wound (S61.-)"],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level (S66.0-)","sprain of joints and ligaments of wrist and hand (S63.-)","burns and corrosions (T20-T32)","frostbite (T33-T34)","insect bite or sting, venomous (T63.4)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Unspecified injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level, sequela is a billable ICD-10-CM diagnosis code (S66.101S). Excludes2 (not included here): Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level (S66.0-); sprain of joints and ligaments of wrist and hand (S63.-); burns and corrosions (T20-T32); frostbite (T33-T34); insect bite or sting, venomous (T63.4). Code also: any associated open wound (S61.-). 7th character: The appropriate 7th character is to be added to each code from category S66.","officialDefinition":"Unspecified injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level, sequela is a billable ICD-10-CM diagnosis code (S66.101S). Excludes2 (not included here): Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level (S66.0-); sprain of joints and ligaments of wrist and hand (S63.-); burns and corrosions (T20-T32); frostbite (T33-T34); insect bite or sting, venomous (T63.4). Code also: any associated open wound (S61.-). 7th character: The appropriate 7th character is to be added to each code from category S66.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category S66"],"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":{"sprain of joints and ligaments of wrist and hand (S63.-)":"S66","burns and corrosions (T20-T32)":"S66","frostbite (T33-T34)":"S66","insect bite or sting, venomous (T63.4)":"S66","Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level (S66.0-)":"S66.1"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}