Final answer:
The Office for Civil Rights (OCR) has enforcement authority for HIPAA Administrative Simplification Standards, which include transactions, code sets, and identifiers.
Step-by-step explanation:
The administrative body that has enforcement authority for HIPAA Administrative Simplification Standards, including transactions, code sets, and identifiers is the Office for Civil Rights (OCR). The OCR is responsible for enforcing the HIPAA Privacy and Security Rules. The HIPAA Privacy Rule protects the privacy of individually identifiable health information, and the Security Rule sets standards for the security of electronic protected health information. The Centers for Medicare & Medicaid Services (CMS) were responsible for enforcing the transactions, code sets, and identifier standards under HIPAA before the enforcement responsibilities were transferred to the OCR. However, CMS still plays a vital role in HIPAA enforcement by working with the OCR.