Modernizing legacy EHR systems in 2025 ranges from $500K to $3M+ depending on hospital size and functionality requirements. Cloud migration ($200K-$800K), FHIR API development ($150K-$500K), and mobile physician apps ($100K-$300K) are significant cost drivers. Progressive modernization strategies help distribute expenses while maintaining critical care continuity. https://www.sunrisetechs.com/a-complete-guide-to-the-software-development-cost-in-2025/