{"code":"W94.11XA","type":"code","title":"Exposure to residence or prolonged visit at high altitude, initial encounter","source":"CMS FY2026 icd10cm_order_2026.txt (restored 2026-08-08 after import gap)","modern_v":"official26","isBillable":true,"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":"Exposure to residence or prolonged visit at high altitude, initial encounter (W94.11XA) is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category W94 (Exposure to high and low air pressure and changes in air pressure), within the Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99) block, within Chapter 20, External Causes of Morbidity (V00-Y99). The official tabular list attaches no additional inclusion or exclusion notes to this code.","clinicalDefinition":"Exposure to residence or prolonged visit at high altitude, initial encounter (W94.11XA) is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category W94 (Exposure to high and low air pressure and changes in air pressure), within the Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99) block, within Chapter 20, External Causes of Morbidity (V00-Y99). The official tabular list attaches no additional inclusion or exclusion notes to this code."}