A residual effect condition produced after the acute phase of an illness ot injury has ended. e.g: arthritis from broken leg years before
Sub Categories
Refers to the groupings of four-digits coded listed under three-digit categories.
Acute
Refers to the condition that is the primary reason for the current encunter. e.g.: Sudden Onset
Manifestions
Characteristics, signs or symptons of an illness
Main Term
Refers to listing in the Alphebetic Index appearing BOLDFACE type.
Down Coding
The process where the insurance carriers reduce the value of a procedure and the resulting reimbursement due to either 1) a mismatch of CPT code and description or 2) ICD-9-CM does not justify the procedure or level of service.
E Codes
Specific ICD-9-CM codes used to identify the cause of injury, poisoning and other adverse effects.
Tabular List
Is the portion of the ICD-9-CM that lists codes and definitions in numeric order. Also referred to as Volume 1.
Eponyms
Medical procedures or conditions named after a person
Primary Code
The ICD-9-CM code that defines the main reason for the current encounter
