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4. Diagnostic Coding: Introduction to ICD-9-CM and ICD-10-CM Lecture 3. 4-24. 4.8 Official Coding Guidelines. ICD-9-CM Official Guidelines for Coding and Reporting — American Hospital Association publication that provides rules for selecting and sequencing diagnosis codes
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4 Diagnostic Coding: Introduction to ICD-9-CM and ICD-10-CM Lecture 3
4-24 4.8 Official Coding Guidelines • ICD-9-CM Official Guidelines for Coding and Reporting—American Hospital Association publication that provides rules for selecting and sequencing diagnosis codes • Includes three key coding guidelines: • Code the primary diagnosis first, followed by current coexisting conditions • Code to the highest degree of certainty, never coding inconclusive, rule-out diagnoses • Code to the highest level of specificity, using fifth digits or fourth digits when available
4-25 4.8 Official Coding Guidelines (Continued) • Acute—illness or condition featuring severe symptoms and a short duration • Chronic—illness or condition with a long duration • Late effect—condition that remains after an acute illness or injury
4-26 4.9 Introducing ICD-10-CM • ICD-10-CM—abbreviated title of International Classification of Diseases, Tenth Revision, Clinical Modification • Differences from ICD-9-CM include chapter structure, chapter order, code structure, increased specificity and clinical detail, and excludes notes • Crosswalk—map of codes for same or similar classifications under two coding systems