{"code":"S23.421","type":"category","title":"Sprain of chondrosternal joint","codeAlso":["any associated open wound"],"includes":["avulsion of joint or ligament of thorax","laceration of cartilage, joint or ligament of thorax","sprain of cartilage, joint or ligament of thorax","traumatic hemarthrosis of joint or ligament of thorax","traumatic rupture of joint or ligament of thorax","traumatic subluxation of joint or ligament of thorax","traumatic tear of joint or ligament of thorax","injuries of breast","injuries of chest (wall)","injuries of interscapular area"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["dislocation, sprain of sternoclavicular joint (S43.2, S43.6)","strain of muscle or tendon of thorax (S29.01-)","burns and corrosions (T20-T32)","effects of foreign body in bronchus (T17.5)","effects of foreign body in esophagus (T18.1)","effects of foreign body in lung (T17.8)","effects of foreign body in trachea (T17.4)","frostbite (T33-T34)","injuries of axilla","injuries of clavicle","injuries of scapular region","injuries of shoulder","insect bite or sting, venomous (T63.4)"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Sprain of chondrosternal joint is a non-billable ICD-10-CM category code (S23.421). A more specific billable subcode must be selected for claims submission.","officialDefinition":"Sprain of chondrosternal joint is a non-billable ICD-10-CM category code (S23.421). A more specific billable subcode must be selected for claims submission. Includes: avulsion of joint or ligament of thorax; laceration of cartilage, joint or ligament of thorax; sprain of cartilage, joint or ligament of thorax; traumatic hemarthrosis of joint or ligament of thorax; traumatic rupture of joint or ligament of thorax; traumatic subluxation of joint or ligament of thorax; traumatic tear of joint or ligament of thorax; injuries of breast; injuries of chest (wall); injuries of interscapular area. Excludes2 (not included here): dislocation, sprain of sternoclavicular joint (S43.2, S43.6); strain of muscle or tendon of thorax (S29.01-); burns and corrosions (T20-T32); effects of foreign body in bronchus (T17.5); effects of foreign body in esophagus (T18.1); effects of foreign body in lung (T17.8); effects of foreign body in trachea (T17.4); frostbite (T33-T34); injuries of axilla; injuries of clavicle; injuries of scapular region; injuries of shoulder; insect bite or sting, venomous (T63.4). Code also: any associated open wound. 7th character: The appropriate 7th character is to be added to each code from category S23.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category S23"],"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":""}