Organization formed in 1913 to advance the health of individuals and communities through leading, representing, and serving health care provider organizations that are accountable to the community and committed to health improvement. AHA maintains the central office on ICD-9-CM, answers coding questions, and publishes the Coding Clinic for ICD-9-CM . AHA hosts the National Uniform Billing Committee (NUBC), which has a formal consultative role under HIPAA.