{"code":"S54.02XA","type":"code","title":"Injury of ulnar nerve at forearm level, left arm, initial encounter","isBillable":true,"modern_v":"official26","source":"CMS FY2026 icd10cm_order_2026.txt (restored 2026-08-08 after import gap)","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":"","officialDefinition":"Injury of ulnar nerve at forearm level, left arm, initial encounter (S54.02XA) is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category S54 (Injury of nerves at forearm level), within the Injuries to the elbow and forearm (S50-S59) block, within Chapter 19, Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88). The official tabular list attaches no additional inclusion or exclusion notes to this code.","clinicalDefinition":"Injury of ulnar nerve at forearm level, left arm, initial encounter (S54.02XA) is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category S54 (Injury of nerves at forearm level), within the Injuries to the elbow and forearm (S50-S59) block, within Chapter 19, Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88). The official tabular list attaches no additional inclusion or exclusion notes to this code."}