Documenting observation and admission
Defining an E/M service
NDC numbers on claims
Mini Mental Status Exam
Editor’s note: While this department represents our best efforts to provide accurate information and useful advice, we cannot guarantee that third-party payers will accept the coding and documentation recommended. Because CPT and ICD-9 codes change annually, you should refer to the current CPT and ICD-9 manuals and the “Documentation Guidelines for Evaluation and Management Services” for the most detailed and up-to-date information.